2.3.2-debian-11-r0 release

bitnami/airflow/2/debian-11/Dockerfile

@@ -0,0 +1,47 @@
+FROM docker.io/bitnami/minideb:bullseye
+LABEL maintainer "Bitnami <containers@bitnami.com>"
+
+ENV BITNAMI_PKG_EXTRA_DIRS="/opt/bitnami/airflow/dags" \
+    HOME="/" \
+    OS_ARCH="amd64" \
+    OS_FLAVOUR="debian-11" \
+    OS_NAME="linux"
+
+COPY prebuildfs /
+# Install required system packages and dependencies
+RUN install_packages acl ca-certificates curl gzip libbrotli1 libbsd0 libbz2-1.0 libc6 libcom-err2 libcrypt1 libcurl4 libedit2 libffi7 libgcc-s1 libgcrypt20 libgmp10 libgnutls30 libgpg-error0 libgssapi-krb5-2 libhogweed6 libicu67 libidn2-0 libk5crypto3 libkeyutils1 libkrb5-3 libkrb5support0 libldap-2.4-2 liblzma5 libmariadb3 libmd0 libncursesw6 libnettle8 libnghttp2-14 libnsl2 libp11-kit0 libpsl5 libreadline8 librtmp1 libsasl2-2 libsqlite3-0 libssh2-1 libssl1.1 libstdc++6 libtasn1-6 libtinfo6 libtirpc3 libunistring2 libuuid1 libxml2 libxslt1.1 locales netbase procps tar zlib1g
+RUN . /opt/bitnami/scripts/libcomponent.sh && component_unpack "gosu" "1.14.0-0" --checksum da4a2f759ccc57c100d795b71ab297f48b31c4dd7578d773d963bbd49c42bd7b
+RUN . /opt/bitnami/scripts/libcomponent.sh && component_unpack "wait-for-port" "1.0.3-0" --checksum 1013e2ebbe58e5dc8f3c79fc952f020fc5306ba48463803cacfbed7779173924
+RUN . /opt/bitnami/scripts/libcomponent.sh && component_unpack "python" "3.8.13-1" --checksum 79af9dcbaa89c4047d2d24b4a4c2ae17b771fe94972734379b9e50ef3dec3442
+RUN . /opt/bitnami/scripts/libcomponent.sh && component_unpack "postgresql-client" "10.21.0-0" --checksum c9d6f09bac47484b4d4aaec3d48018c46d4102fb35abebeb62ef7a3496125e4c
+RUN . /opt/bitnami/scripts/libcomponent.sh && component_unpack "ini-file" "1.4.3-0" --checksum ef1f6d1ca9e4873f82cf5037078b55524596ca2755262948f23571767bfd4101
+RUN . /opt/bitnami/scripts/libcomponent.sh && component_unpack "git" "2.36.1-0" --checksum c15ff3fff7478e74922d560c5c4ffcb8d11bff92975f81591b62742902edd731
+RUN . /opt/bitnami/scripts/libcomponent.sh && component_unpack "airflow" "2.3.2-0" --checksum 454fa1afc782cc687f8ef7f251343f628d1580226a399cd9fcfdccf1d68a1058
+RUN apt-get update && apt-get upgrade -y && \
+    rm -r /var/lib/apt/lists /var/cache/apt/archives
+RUN chmod g+rwX /opt/bitnami
+RUN localedef -c -f UTF-8 -i en_US en_US.UTF-8
+RUN update-locale LANG=C.UTF-8 LC_MESSAGES=POSIX && \
+    DEBIAN_FRONTEND=noninteractive dpkg-reconfigure locales
+RUN echo 'en_US.UTF-8 UTF-8' >> /etc/locale.gen && locale-gen
+
+COPY rootfs /
+RUN /opt/bitnami/scripts/airflow/postunpack.sh
+RUN /opt/bitnami/scripts/locales/add-extra-locales.sh
+ENV AIRFLOW_HOME="/opt/bitnami/airflow" \
+    APP_VERSION="2.3.2" \
+    BITNAMI_APP_NAME="airflow" \
+    LANG="en_US.UTF-8" \
+    LANGUAGE="en_US:en" \
+    LD_LIBRARY_PATH="/opt/bitnami/python/lib/:/opt/bitnami/airflow/venv/lib/python3.8/site-packages/numpy.libs/:$LD_LIBRARY_PATH" \
+    LIBNSS_WRAPPER_PATH="/opt/bitnami/common/lib/libnss_wrapper.so" \
+    LNAME="airflow" \
+    NSS_WRAPPER_GROUP="/opt/bitnami/airflow/nss_group" \
+    NSS_WRAPPER_PASSWD="/opt/bitnami/airflow/nss_passwd" \
+    PATH="/opt/bitnami/common/bin:/opt/bitnami/python/bin:/opt/bitnami/postgresql/bin:/opt/bitnami/git/bin:/opt/bitnami/airflow/venv/bin:$PATH"
+
+EXPOSE 8080
+
+USER 1001
+ENTRYPOINT [ "/opt/bitnami/scripts/airflow/entrypoint.sh" ]
+CMD [ "/opt/bitnami/scripts/airflow/run.sh" ]

bitnami/airflow/2/debian-11/docker-compose.yml

@@ -0,0 +1,50 @@
+version: '2'
+
+services:
+  postgresql:
+    image: docker.io/bitnami/postgresql:10
+    volumes:
+      - 'postgresql_data:/bitnami/postgresql'
+    environment:
+      - POSTGRESQL_DATABASE=bitnami_airflow
+      - POSTGRESQL_USERNAME=bn_airflow
+      - POSTGRESQL_PASSWORD=bitnami1
+      # ALLOW_EMPTY_PASSWORD is recommended only for development.
+      - ALLOW_EMPTY_PASSWORD=yes
+  redis:
+    image: docker.io/bitnami/redis:6.0
+    volumes:
+      - 'redis_data:/bitnami'
+    environment:
+      # ALLOW_EMPTY_PASSWORD is recommended only for development.
+      - ALLOW_EMPTY_PASSWORD=yes
+  airflow-scheduler:
+    image: docker.io/bitnami/airflow-scheduler:2
+    environment:
+      - AIRFLOW_DATABASE_NAME=bitnami_airflow
+      - AIRFLOW_DATABASE_USERNAME=bn_airflow
+      - AIRFLOW_DATABASE_PASSWORD=bitnami1
+      - AIRFLOW_EXECUTOR=CeleryExecutor
+      - AIRFLOW_WEBSERVER_HOST=airflow
+  airflow-worker:
+    image: docker.io/bitnami/airflow-worker:2
+    environment:
+      - AIRFLOW_DATABASE_NAME=bitnami_airflow
+      - AIRFLOW_DATABASE_USERNAME=bn_airflow
+      - AIRFLOW_DATABASE_PASSWORD=bitnami1
+      - AIRFLOW_EXECUTOR=CeleryExecutor
+      - AIRFLOW_WEBSERVER_HOST=airflow
+  airflow:
+    image: docker.io/bitnami/airflow:2
+    environment:
+      - AIRFLOW_DATABASE_NAME=bitnami_airflow
+      - AIRFLOW_DATABASE_USERNAME=bn_airflow
+      - AIRFLOW_DATABASE_PASSWORD=bitnami1
+      - AIRFLOW_EXECUTOR=CeleryExecutor
+    ports:
+      - '8080:8080'
+volumes:
+  postgresql_data:
+    driver: local
+  redis_data:
+    driver: local

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/.bitnami_components.json

@@ -0,0 +1,51 @@
+{
+    "airflow": {
+        "arch": "amd64",
+        "digest": "454fa1afc782cc687f8ef7f251343f628d1580226a399cd9fcfdccf1d68a1058",
+        "distro": "debian-11",
+        "type": "NAMI",
+        "version": "2.3.2-0"
+    },
+    "git": {
+        "arch": "amd64",
+        "digest": "c15ff3fff7478e74922d560c5c4ffcb8d11bff92975f81591b62742902edd731",
+        "distro": "debian-11",
+        "type": "NAMI",
+        "version": "2.36.1-0"
+    },
+    "gosu": {
+        "arch": "amd64",
+        "digest": "da4a2f759ccc57c100d795b71ab297f48b31c4dd7578d773d963bbd49c42bd7b",
+        "distro": "debian-11",
+        "type": "NAMI",
+        "version": "1.14.0-0"
+    },
+    "ini-file": {
+        "arch": "amd64",
+        "digest": "ef1f6d1ca9e4873f82cf5037078b55524596ca2755262948f23571767bfd4101",
+        "distro": "debian-11",
+        "type": "NAMI",
+        "version": "1.4.3-0"
+    },
+    "postgresql-client": {
+        "arch": "amd64",
+        "digest": "c9d6f09bac47484b4d4aaec3d48018c46d4102fb35abebeb62ef7a3496125e4c",
+        "distro": "debian-11",
+        "type": "NAMI",
+        "version": "10.21.0-0"
+    },
+    "python": {
+        "arch": "amd64",
+        "digest": "79af9dcbaa89c4047d2d24b4a4c2ae17b771fe94972734379b9e50ef3dec3442",
+        "distro": "debian-11",
+        "type": "NAMI",
+        "version": "3.8.13-1"
+    },
+    "wait-for-port": {
+        "arch": "amd64",
+        "digest": "1013e2ebbe58e5dc8f3c79fc952f020fc5306ba48463803cacfbed7779173924",
+        "distro": "debian-11",
+        "type": "NAMI",
+        "version": "1.0.3-0"
+    }
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/licenses/licenses.txt

@@ -0,0 +1,3 @@
+Bitnami containers ship with software bundles. You can find the licenses under:
+/opt/bitnami/nami/COPYING
+/opt/bitnami/[name-of-bundle]/licenses/[bundle-version].txt

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libbitnami.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+#
+# Bitnami custom library
+
+# shellcheck disable=SC1091
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+
+# Constants
+BOLD='\033[1m'
+
+# Functions
+
+########################
+# Print the welcome page
+# Globals:
+#   DISABLE_WELCOME_MESSAGE
+#   BITNAMI_APP_NAME
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+print_welcome_page() {
+    if [[ -z "${DISABLE_WELCOME_MESSAGE:-}" ]]; then
+        if [[ -n "$BITNAMI_APP_NAME" ]]; then
+            print_image_welcome_page
+        fi
+    fi
+}
+
+########################
+# Print the welcome page for a Bitnami Docker image
+# Globals:
+#   BITNAMI_APP_NAME
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+print_image_welcome_page() {
+    local github_url="https://github.com/bitnami/bitnami-docker-${BITNAMI_APP_NAME}"
+
+    log ""
+    log "${BOLD}Welcome to the Bitnami ${BITNAMI_APP_NAME} container${RESET}"
+    log "Subscribe to project updates by watching ${BOLD}${github_url}${RESET}"
+    log "Submit issues and feature requests at ${BOLD}${github_url}/issues${RESET}"
+    log ""
+}
+

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libcomponent.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+#
+# Library for managing Bitnami components
+
+# Constants
+CACHE_ROOT="/tmp/bitnami/pkg/cache"
+DOWNLOAD_URL="https://downloads.bitnami.com/files/stacksmith"
+
+# Functions
+
+########################
+# Download and unpack a Bitnami package
+# Globals:
+#   OS_NAME
+#   OS_ARCH
+#   OS_FLAVOUR
+# Arguments:
+#   $1 - component's name
+#   $2 - component's version
+# Returns:
+#   None
+#########################
+component_unpack() {
+    local name="${1:?name is required}"
+    local version="${2:?version is required}"
+    local base_name="${name}-${version}-${OS_NAME}-${OS_ARCH}-${OS_FLAVOUR}"
+    local package_sha256=""
+    local directory="/opt/bitnami"
+
+    # Validate arguments
+    shift 2
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+            -c|--checksum)
+                shift
+                package_sha256="${1:?missing package checksum}"
+                ;;
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+
+    echo "Downloading $base_name package"
+    if [ -f "${CACHE_ROOT}/${base_name}.tar.gz" ]; then
+        echo "${CACHE_ROOT}/${base_name}.tar.gz already exists, skipping download."
+        cp "${CACHE_ROOT}/${base_name}.tar.gz" .
+        rm "${CACHE_ROOT}/${base_name}.tar.gz"
+        if [ -f "${CACHE_ROOT}/${base_name}.tar.gz.sha256" ]; then
+            echo "Using the local sha256 from ${CACHE_ROOT}/${base_name}.tar.gz.sha256"
+            package_sha256="$(< "${CACHE_ROOT}/${base_name}.tar.gz.sha256")"
+            rm "${CACHE_ROOT}/${base_name}.tar.gz.sha256"
+        fi
+    else
+	curl --remote-name --silent --show-error --fail "${DOWNLOAD_URL}/${base_name}.tar.gz"
+    fi
+    if [ -n "$package_sha256" ]; then
+        echo "Verifying package integrity"
+        echo "$package_sha256  ${base_name}.tar.gz" | sha256sum --check - || exit "$?"
+    fi
+    tar --directory "${directory}" --extract --gunzip --file "${base_name}.tar.gz" --no-same-owner --strip-components=2
+    rm "${base_name}.tar.gz"
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libfile.sh

@@ -0,0 +1,139 @@
+#!/bin/bash
+#
+# Library for managing files
+
+# shellcheck disable=SC1091
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/libos.sh
+
+# Functions
+
+########################
+# Replace a regex-matching string in a file
+# Arguments:
+#   $1 - filename
+#   $2 - match regex
+#   $3 - substitute regex
+#   $4 - use POSIX regex. Default: true
+# Returns:
+#   None
+#########################
+replace_in_file() {
+    local filename="${1:?filename is required}"
+    local match_regex="${2:?match regex is required}"
+    local substitute_regex="${3:?substitute regex is required}"
+    local posix_regex=${4:-true}
+
+    local result
+
+    # We should avoid using 'sed in-place' substitutions
+    # 1) They are not compatible with files mounted from ConfigMap(s)
+    # 2) We found incompatibility issues with Debian10 and "in-place" substitutions
+    local -r del=$'\001' # Use a non-printable character as a 'sed' delimiter to avoid issues
+    if [[ $posix_regex = true ]]; then
+        result="$(sed -E "s${del}${match_regex}${del}${substitute_regex}${del}g" "$filename")"
+    else
+        result="$(sed "s${del}${match_regex}${del}${substitute_regex}${del}g" "$filename")"
+    fi
+    echo "$result" > "$filename"
+}
+
+########################
+# Replace a regex-matching multiline string in a file
+# Arguments:
+#   $1 - filename
+#   $2 - match regex
+#   $3 - substitute regex
+# Returns:
+#   None
+#########################
+replace_in_file_multiline() {
+    local filename="${1:?filename is required}"
+    local match_regex="${2:?match regex is required}"
+    local substitute_regex="${3:?substitute regex is required}"
+
+    local result
+    local -r del=$'\001' # Use a non-printable character as a 'sed' delimiter to avoid issues
+    result="$(perl -pe "BEGIN{undef $/;} s${del}${match_regex}${del}${substitute_regex}${del}sg" "$filename")"
+    echo "$result" > "$filename"
+}
+
+########################
+# Remove a line in a file based on a regex
+# Arguments:
+#   $1 - filename
+#   $2 - match regex
+#   $3 - use POSIX regex. Default: true
+# Returns:
+#   None
+#########################
+remove_in_file() {
+    local filename="${1:?filename is required}"
+    local match_regex="${2:?match regex is required}"
+    local posix_regex=${3:-true}
+    local result
+
+    # We should avoid using 'sed in-place' substitutions
+    # 1) They are not compatible with files mounted from ConfigMap(s)
+    # 2) We found incompatibility issues with Debian10 and "in-place" substitutions
+    if [[ $posix_regex = true ]]; then
+        result="$(sed -E "/$match_regex/d" "$filename")"
+    else
+        result="$(sed "/$match_regex/d" "$filename")"
+    fi
+    echo "$result" > "$filename"
+}
+
+########################
+# Appends text after the last line matching a pattern
+# Arguments:
+#   $1 - file
+#   $2 - match regex
+#   $3 - contents to add
+# Returns:
+#   None
+#########################
+append_file_after_last_match() {
+    local file="${1:?missing file}"
+    local match_regex="${2:?missing pattern}"
+    local value="${3:?missing value}"
+
+    # We read the file in reverse, replace the first match (0,/pattern/s) and then reverse the results again
+    result="$(tac "$file" | sed -E "0,/($match_regex)/s||${value}\n\1|" | tac)"
+    echo "$result" > "$file"
+}
+
+########################
+# Wait until certain entry is present in a log file
+# Arguments:
+#   $1 - entry to look for
+#   $2 - log file
+#   $3 - max retries. Default: 12
+#   $4 - sleep between retries (in seconds). Default: 5
+# Returns:
+#   Boolean
+#########################
+wait_for_log_entry() {
+    local -r entry="${1:-missing entry}"
+    local -r log_file="${2:-missing log file}"
+    local -r retries="${3:-12}"
+    local -r interval_time="${4:-5}"
+    local attempt=0
+
+    check_log_file_for_entry() {
+        if ! grep -qE "$entry" "$log_file"; then
+            debug "Entry \"${entry}\" still not present in ${log_file} (attempt $((++attempt))/${retries})"
+            return 1
+        fi
+    }
+    debug "Checking that ${log_file} log file contains entry \"${entry}\""
+    if retry_while check_log_file_for_entry "$retries" "$interval_time"; then
+        debug "Found entry \"${entry}\" in ${log_file}"
+        true
+    else
+        error "Could not find entry \"${entry}\" in ${log_file} after ${retries} retries"
+        debug_execute cat "$log_file"
+        return 1
+    fi
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libfs.sh

@@ -0,0 +1,190 @@
+#!/bin/bash
+#
+# Library for file system actions
+
+# shellcheck disable=SC1091
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+
+# Functions
+
+########################
+# Ensure a file/directory is owned (user and group) but the given user
+# Arguments:
+#   $1 - filepath
+#   $2 - owner
+# Returns:
+#   None
+#########################
+owned_by() {
+    local path="${1:?path is missing}"
+    local owner="${2:?owner is missing}"
+    local group="${3:-}"
+
+    if [[ -n $group ]]; then
+        chown "$owner":"$group" "$path"
+    else
+        chown "$owner":"$owner" "$path"
+    fi
+}
+
+########################
+# Ensure a directory exists and, optionally, is owned by the given user
+# Arguments:
+#   $1 - directory
+#   $2 - owner
+# Returns:
+#   None
+#########################
+ensure_dir_exists() {
+    local dir="${1:?directory is missing}"
+    local owner_user="${2:-}"
+    local owner_group="${3:-}"
+
+    mkdir -p "${dir}"
+    if [[ -n $owner_user ]]; then
+        owned_by "$dir" "$owner_user" "$owner_group"
+    fi
+}
+
+########################
+# Checks whether a directory is empty or not
+# arguments:
+#   $1 - directory
+# returns:
+#   boolean
+#########################
+is_dir_empty() {
+    local -r path="${1:?missing directory}"
+    # Calculate real path in order to avoid issues with symlinks
+    local -r dir="$(realpath "$path")"
+    if [[ ! -e "$dir" ]] || [[ -z "$(ls -A "$dir")" ]]; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Checks whether a mounted directory is empty or not
+# arguments:
+#   $1 - directory
+# returns:
+#   boolean
+#########################
+is_mounted_dir_empty() {
+    local dir="${1:?missing directory}"
+
+    if is_dir_empty "$dir" || find "$dir" -mindepth 1 -maxdepth 1 -not -name ".snapshot" -not -name "lost+found" -exec false {} +; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Checks whether a file can be written to or not
+# arguments:
+#   $1 - file
+# returns:
+#   boolean
+#########################
+is_file_writable() {
+    local file="${1:?missing file}"
+    local dir
+    dir="$(dirname "$file")"
+
+    if [[ (-f "$file" && -w "$file") || (! -f "$file" && -d "$dir" && -w "$dir") ]]; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Relativize a path
+# arguments:
+#   $1 - path
+#   $2 - base
+# returns:
+#   None
+#########################
+relativize() {
+    local -r path="${1:?missing path}"
+    local -r base="${2:?missing base}"
+    pushd "$base" >/dev/null || exit
+    realpath -q --no-symlinks --relative-base="$base" "$path" | sed -e 's|^/$|.|' -e 's|^/||'
+    popd >/dev/null || exit
+}
+
+########################
+# Configure permisions and ownership recursively
+# Globals:
+#   None
+# Arguments:
+#   $1 - paths (as a string).
+# Flags:
+#   -f|--file-mode - mode for directories.
+#   -d|--dir-mode - mode for files.
+#   -u|--user - user
+#   -g|--group - group
+# Returns:
+#   None
+#########################
+configure_permissions_ownership() {
+    local -r paths="${1:?paths is missing}"
+    local dir_mode=""
+    local file_mode=""
+    local user=""
+    local group=""
+
+    # Validate arguments
+    shift 1
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+        -f | --file-mode)
+            shift
+            file_mode="${1:?missing mode for files}"
+            ;;
+        -d | --dir-mode)
+            shift
+            dir_mode="${1:?missing mode for directories}"
+            ;;
+        -u | --user)
+            shift
+            user="${1:?missing user}"
+            ;;
+        -g | --group)
+            shift
+            group="${1:?missing group}"
+            ;;
+        *)
+            echo "Invalid command line flag $1" >&2
+            return 1
+            ;;
+        esac
+        shift
+    done
+
+    read -r -a filepaths <<<"$paths"
+    for p in "${filepaths[@]}"; do
+        if [[ -e "$p" ]]; then
+            if [[ -n $dir_mode ]]; then
+                find -L "$p" -type d -exec chmod "$dir_mode" {} \;
+            fi
+            if [[ -n $file_mode ]]; then
+                find -L "$p" -type f -exec chmod "$file_mode" {} \;
+            fi
+            if [[ -n $user ]] && [[ -n $group ]]; then
+                chown -LR "$user":"$group" "$p"
+            elif [[ -n $user ]] && [[ -z $group ]]; then
+                chown -LR "$user" "$p"
+            elif [[ -z $user ]] && [[ -n $group ]]; then
+                chgrp -LR "$group" "$p"
+            fi
+        else
+            stderr_print "$p does not exist"
+        fi
+    done
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libhook.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+#
+# Library to use for scripts expected to be used as Kubernetes lifecycle hooks
+
+# shellcheck disable=SC1091
+
+# Load generic libraries
+. /opt/bitnami/scripts/liblog.sh
+. /opt/bitnami/scripts/libos.sh
+
+# Override functions that log to stdout/stderr of the current process, so they print to process 1
+for function_to_override in stderr_print debug_execute; do
+    # Output is sent to output of process 1 and thus end up in the container log
+    # The hook output in general isn't saved
+    eval "$(declare -f "$function_to_override") >/proc/1/fd/1 2>/proc/1/fd/2"
+done

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/liblog.sh

@@ -0,0 +1,112 @@
+#!/bin/bash
+#
+# Library for logging functions
+
+# Constants
+RESET='\033[0m'
+RED='\033[38;5;1m'
+GREEN='\033[38;5;2m'
+YELLOW='\033[38;5;3m'
+MAGENTA='\033[38;5;5m'
+CYAN='\033[38;5;6m'
+
+# Functions
+
+########################
+# Print to STDERR
+# Arguments:
+#   Message to print
+# Returns:
+#   None
+#########################
+stderr_print() {
+    # 'is_boolean_yes' is defined in libvalidations.sh, but depends on this file so we cannot source it
+    local bool="${BITNAMI_QUIET:-false}"
+    # comparison is performed without regard to the case of alphabetic characters
+    shopt -s nocasematch
+    if ! [[ "$bool" = 1 || "$bool" =~ ^(yes|true)$ ]]; then
+        printf "%b\\n" "${*}" >&2
+    fi
+}
+
+########################
+# Log message
+# Arguments:
+#   Message to log
+# Returns:
+#   None
+#########################
+log() {
+    stderr_print "${CYAN}${MODULE:-} ${MAGENTA}$(date "+%T.%2N ")${RESET}${*}"
+}
+########################
+# Log an 'info' message
+# Arguments:
+#   Message to log
+# Returns:
+#   None
+#########################
+info() {
+    log "${GREEN}INFO ${RESET} ==> ${*}"
+}
+########################
+# Log message
+# Arguments:
+#   Message to log
+# Returns:
+#   None
+#########################
+warn() {
+    log "${YELLOW}WARN ${RESET} ==> ${*}"
+}
+########################
+# Log an 'error' message
+# Arguments:
+#   Message to log
+# Returns:
+#   None
+#########################
+error() {
+    log "${RED}ERROR${RESET} ==> ${*}"
+}
+########################
+# Log a 'debug' message
+# Globals:
+#   BITNAMI_DEBUG
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+debug() {
+    # 'is_boolean_yes' is defined in libvalidations.sh, but depends on this file so we cannot source it
+    local bool="${BITNAMI_DEBUG:-false}"
+    # comparison is performed without regard to the case of alphabetic characters
+    shopt -s nocasematch
+    if [[ "$bool" = 1 || "$bool" =~ ^(yes|true)$ ]]; then
+        log "${MAGENTA}DEBUG${RESET} ==> ${*}"
+    fi
+}
+
+########################
+# Indent a string
+# Arguments:
+#   $1 - string
+#   $2 - number of indentation characters (default: 4)
+#   $3 - indentation character (default: " ")
+# Returns:
+#   None
+#########################
+indent() {
+    local string="${1:-}"
+    local num="${2:?missing num}"
+    local char="${3:-" "}"
+    # Build the indentation unit string
+    local indent_unit=""
+    for ((i = 0; i < num; i++)); do
+        indent_unit="${indent_unit}${char}"
+    done
+    # shellcheck disable=SC2001
+    # Complex regex, see https://github.com/koalaman/shellcheck/wiki/SC2001#exceptions
+    echo "$string" | sed "s/^/${indent_unit}/"
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libnet.sh

@@ -0,0 +1,163 @@
+#!/bin/bash
+#
+# Library for network functions
+
+# shellcheck disable=SC1091
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+
+# Functions
+
+########################
+# Resolve IP address for a host/domain (i.e. DNS lookup)
+# Arguments:
+#   $1 - Hostname to resolve
+#   $2 - IP address version (v4, v6), leave empty for resolving to any version
+# Returns:
+#   IP
+#########################
+dns_lookup() {
+    local host="${1:?host is missing}"
+    local ip_version="${2:-}"
+    getent "ahosts${ip_version}" "$host" | awk '/STREAM/ {print $1 }' | head -n 1
+}
+
+#########################
+# Wait for a hostname and return the IP
+# Arguments:
+#   $1 - hostname
+#   $2 - number of retries
+#   $3 - seconds to wait between retries
+# Returns:
+#   - IP address that corresponds to the hostname
+#########################
+wait_for_dns_lookup() {
+    local hostname="${1:?hostname is missing}"
+    local retries="${2:-5}"
+    local seconds="${3:-1}"
+    check_host() {
+        if [[ $(dns_lookup "$hostname") == "" ]]; then
+            false
+        else
+            true
+        fi
+    }
+    # Wait for the host to be ready
+    retry_while "check_host ${hostname}" "$retries" "$seconds"
+    dns_lookup "$hostname"
+}
+
+########################
+# Get machine's IP
+# Arguments:
+#   None
+# Returns:
+#   Machine IP
+#########################
+get_machine_ip() {
+    local -a ip_addresses
+    local hostname
+    hostname="$(hostname)"
+    read -r -a ip_addresses <<< "$(dns_lookup "$hostname" | xargs echo)"
+    if [[ "${#ip_addresses[@]}" -gt 1 ]]; then
+        warn "Found more than one IP address associated to hostname ${hostname}: ${ip_addresses[*]}, will use ${ip_addresses[0]}"
+    elif [[ "${#ip_addresses[@]}" -lt 1 ]]; then
+        error "Could not find any IP address associated to hostname ${hostname}"
+        exit 1
+    fi
+    echo "${ip_addresses[0]}"
+}
+
+########################
+# Check if the provided argument is a resolved hostname
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_hostname_resolved() {
+    local -r host="${1:?missing value}"
+    if [[ -n "$(dns_lookup "$host")" ]]; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Parse URL
+# Globals:
+#   None
+# Arguments:
+#   $1 - uri - String
+#   $2 - component to obtain. Valid options (scheme, authority, userinfo, host, port, path, query or fragment) - String
+# Returns:
+#   String
+parse_uri() {
+    local uri="${1:?uri is missing}"
+    local component="${2:?component is missing}"
+
+    # Solution based on https://tools.ietf.org/html/rfc3986#appendix-B with
+    # additional sub-expressions to split authority into userinfo, host and port
+    # Credits to Patryk Obara (see https://stackoverflow.com/a/45977232/6694969)
+    local -r URI_REGEX='^(([^:/?#]+):)?(//((([^@/?#]+)@)?([^:/?#]+)(:([0-9]+))?))?(/([^?#]*))?(\?([^#]*))?(#(.*))?'
+    #                    ||            |  |||            |         | |            | |         |  |        | |
+    #                    |2 scheme     |  ||6 userinfo   7 host    | 9 port       | 11 rpath  |  13 query | 15 fragment
+    #                    1 scheme:     |  |5 userinfo@             8 :...         10 path     12 ?...     14 #...
+    #                                  |  4 authority
+    #                                  3 //...
+    local index=0
+    case "$component" in
+        scheme)
+            index=2
+            ;;
+        authority)
+            index=4
+            ;;
+        userinfo)
+            index=6
+            ;;
+        host)
+            index=7
+            ;;
+        port)
+            index=9
+            ;;
+        path)
+            index=10
+            ;;
+        query)
+            index=13
+            ;;
+        fragment)
+            index=14
+            ;;
+        *)
+            stderr_print "unrecognized component $component"
+            return 1
+            ;;
+    esac
+    [[ "$uri" =~ $URI_REGEX ]] && echo "${BASH_REMATCH[${index}]}"
+}
+
+########################
+# Wait for a HTTP connection to succeed
+# Globals:
+#   *
+# Arguments:
+#   $1 - URL to wait for
+#   $2 - Maximum amount of retries (optional)
+#   $3 - Time between retries (optional)
+# Returns:
+#   true if the HTTP connection succeeded, false otherwise
+#########################
+wait_for_http_connection() {
+    local url="${1:?missing url}"
+    local retries="${2:-}"
+    local sleep_time="${3:-}"
+    if ! retry_while "debug_execute curl --silent ${url}" "$retries" "$sleep_time"; then
+        error "Could not connect to ${url}"
+        return 1
+    fi
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libos.sh

@@ -0,0 +1,466 @@
+#!/bin/bash
+#
+# Library for operating system actions
+
+# shellcheck disable=SC1091
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+. /opt/bitnami/scripts/libfs.sh
+. /opt/bitnami/scripts/libvalidations.sh
+
+# Functions
+
+########################
+# Check if an user exists in the system
+# Arguments:
+#   $1 - user
+# Returns:
+#   Boolean
+#########################
+user_exists() {
+    local user="${1:?user is missing}"
+    id "$user" >/dev/null 2>&1
+}
+
+########################
+# Check if a group exists in the system
+# Arguments:
+#   $1 - group
+# Returns:
+#   Boolean
+#########################
+group_exists() {
+    local group="${1:?group is missing}"
+    getent group "$group" >/dev/null 2>&1
+}
+
+########################
+# Create a group in the system if it does not exist already
+# Arguments:
+#   $1 - group
+# Flags:
+#   -i|--gid - the ID for the new group
+#   -s|--system - Whether to create new user as system user (uid <= 999)
+# Returns:
+#   None
+#########################
+ensure_group_exists() {
+    local group="${1:?group is missing}"
+    local gid=""
+    local is_system_user=false
+
+    # Validate arguments
+    shift 1
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+        -i | --gid)
+            shift
+            gid="${1:?missing gid}"
+            ;;
+        -s | --system)
+            is_system_user=true
+            ;;
+        *)
+            echo "Invalid command line flag $1" >&2
+            return 1
+            ;;
+        esac
+        shift
+    done
+
+    if ! group_exists "$group"; then
+        local -a args=("$group")
+        if [[ -n "$gid" ]]; then
+            if group_exists "$gid"; then
+                error "The GID $gid is already in use." >&2
+                return 1
+            fi
+            args+=("--gid" "$gid")
+        fi
+        $is_system_user && args+=("--system")
+        groupadd "${args[@]}" >/dev/null 2>&1
+    fi
+}
+
+########################
+# Create an user in the system if it does not exist already
+# Arguments:
+#   $1 - user
+# Flags:
+#   -i|--uid - the ID for the new user
+#   -g|--group - the group the new user should belong to
+#   -a|--append-groups - comma-separated list of supplemental groups to append to the new user
+#   -h|--home - the home directory for the new user
+#   -s|--system - whether to create new user as system user (uid <= 999)
+# Returns:
+#   None
+#########################
+ensure_user_exists() {
+    local user="${1:?user is missing}"
+    local uid=""
+    local group=""
+    local append_groups=""
+    local home=""
+    local is_system_user=false
+
+    # Validate arguments
+    shift 1
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+        -i | --uid)
+            shift
+            uid="${1:?missing uid}"
+            ;;
+        -g | --group)
+            shift
+            group="${1:?missing group}"
+            ;;
+        -a | --append-groups)
+            shift
+            append_groups="${1:?missing append_groups}"
+            ;;
+        -h | --home)
+            shift
+            home="${1:?missing home directory}"
+            ;;
+        -s | --system)
+            is_system_user=true
+            ;;
+        *)
+            echo "Invalid command line flag $1" >&2
+            return 1
+            ;;
+        esac
+        shift
+    done
+
+    if ! user_exists "$user"; then
+        local -a user_args=("-N" "$user")
+        if [[ -n "$uid" ]]; then
+            if user_exists "$uid"; then
+                error "The UID $uid is already in use."
+                return 1
+            fi
+            user_args+=("--uid" "$uid")
+        else
+            $is_system_user && user_args+=("--system")
+        fi
+        useradd "${user_args[@]}" >/dev/null 2>&1
+    fi
+
+    if [[ -n "$group" ]]; then
+        local -a group_args=("$group")
+        $is_system_user && group_args+=("--system")
+        ensure_group_exists "${group_args[@]}"
+        usermod -g "$group" "$user" >/dev/null 2>&1
+    fi
+
+    if [[ -n "$append_groups" ]]; then
+        local -a groups
+        read -ra groups <<<"$(tr ',;' ' ' <<<"$append_groups")"
+        for group in "${groups[@]}"; do
+            ensure_group_exists "$group"
+            usermod -aG "$group" "$user" >/dev/null 2>&1
+        done
+    fi
+
+    if [[ -n "$home" ]]; then
+        mkdir -p "$home"
+        usermod -d "$home" "$user" >/dev/null 2>&1
+        configure_permissions_ownership "$home" -d "775" -f "664" -u "$user" -g "$group"
+    fi
+}
+
+########################
+# Check if the script is currently running as root
+# Arguments:
+#   $1 - user
+#   $2 - group
+# Returns:
+#   Boolean
+#########################
+am_i_root() {
+    if [[ "$(id -u)" = "0" ]]; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Print OS metadata
+# Arguments:
+#   $1 - Flag name
+# Flags:
+#   --id - Distro ID
+#   --version - Distro version
+#   --branch - Distro branch
+#   --codename - Distro codename
+# Returns:
+#   String
+#########################
+get_os_metadata() {
+    local -r flag_name="${1:?missing flag}"
+    # Helper function
+    get_os_release_metadata() {
+        local -r env_name="${1:?missing environment variable name}"
+        (
+            . /etc/os-release
+            echo "${!env_name}"
+        )
+    }
+    case "$flag_name" in
+    --id)
+        get_os_release_metadata ID
+        ;;
+    --version)
+        get_os_release_metadata VERSION_ID
+        ;;
+    --branch)
+        get_os_release_metadata VERSION_ID | sed 's/\..*//'
+        ;;
+    --codename)
+        get_os_release_metadata VERSION_CODENAME
+        ;;
+    *)
+        error "Unknown flag ${flag_name}"
+        return 1
+        ;;
+    esac
+}
+
+########################
+# Get total memory available
+# Arguments:
+#   None
+# Returns:
+#   Memory in bytes
+#########################
+get_total_memory() {
+    echo $(($(grep MemTotal /proc/meminfo | awk '{print $2}') / 1024))
+}
+
+########################
+# Get machine size depending on specified memory
+# Globals:
+#   None
+# Arguments:
+#   None
+# Flags:
+#   --memory - memory size (optional)
+# Returns:
+#   Detected instance size
+#########################
+get_machine_size() {
+    local memory=""
+    # Validate arguments
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+        --memory)
+            shift
+            memory="${1:?missing memory}"
+            ;;
+        *)
+            echo "Invalid command line flag $1" >&2
+            return 1
+            ;;
+        esac
+        shift
+    done
+    if [[ -z "$memory" ]]; then
+        debug "Memory was not specified, detecting available memory automatically"
+        memory="$(get_total_memory)"
+    fi
+    sanitized_memory=$(convert_to_mb "$memory")
+    if [[ "$sanitized_memory" -gt 26000 ]]; then
+        echo 2xlarge
+    elif [[ "$sanitized_memory" -gt 13000 ]]; then
+        echo xlarge
+    elif [[ "$sanitized_memory" -gt 6000 ]]; then
+        echo large
+    elif [[ "$sanitized_memory" -gt 3000 ]]; then
+        echo medium
+    elif [[ "$sanitized_memory" -gt 1500 ]]; then
+        echo small
+    else
+        echo micro
+    fi
+}
+
+########################
+# Get machine size depending on specified memory
+# Globals:
+#   None
+# Arguments:
+#   $1 - memory size (optional)
+# Returns:
+#   Detected instance size
+#########################
+get_supported_machine_sizes() {
+    echo micro small medium large xlarge 2xlarge
+}
+
+########################
+# Convert memory size from string to amount of megabytes (i.e. 2G -> 2048)
+# Globals:
+#   None
+# Arguments:
+#   $1 - memory size
+# Returns:
+#   Result of the conversion
+#########################
+convert_to_mb() {
+    local amount="${1:-}"
+    if [[ $amount =~ ^([0-9]+)(m|M|g|G) ]]; then
+        size="${BASH_REMATCH[1]}"
+        unit="${BASH_REMATCH[2]}"
+        if [[ "$unit" = "g" || "$unit" = "G" ]]; then
+            amount="$((size * 1024))"
+        else
+            amount="$size"
+        fi
+    fi
+    echo "$amount"
+}
+
+#########################
+# Redirects output to /dev/null if debug mode is disabled
+# Globals:
+#   BITNAMI_DEBUG
+# Arguments:
+#   $@ - Command to execute
+# Returns:
+#   None
+#########################
+debug_execute() {
+    if is_boolean_yes "${BITNAMI_DEBUG:-false}"; then
+        "$@"
+    else
+        "$@" >/dev/null 2>&1
+    fi
+}
+
+########################
+# Retries a command a given number of times
+# Arguments:
+#   $1 - cmd (as a string)
+#   $2 - max retries. Default: 12
+#   $3 - sleep between retries (in seconds). Default: 5
+# Returns:
+#   Boolean
+#########################
+retry_while() {
+    local cmd="${1:?cmd is missing}"
+    local retries="${2:-12}"
+    local sleep_time="${3:-5}"
+    local return_value=1
+
+    read -r -a command <<<"$cmd"
+    for ((i = 1; i <= retries; i += 1)); do
+        "${command[@]}" && return_value=0 && break
+        sleep "$sleep_time"
+    done
+    return $return_value
+}
+
+########################
+# Generate a random string
+# Arguments:
+#   -t|--type - String type (ascii, alphanumeric, numeric), defaults to ascii
+#   -c|--count - Number of characters, defaults to 32
+# Arguments:
+#   None
+# Returns:
+#   None
+# Returns:
+#   String
+#########################
+generate_random_string() {
+    local type="ascii"
+    local count="32"
+    local filter
+    local result
+    # Validate arguments
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+        -t | --type)
+            shift
+            type="$1"
+            ;;
+        -c | --count)
+            shift
+            count="$1"
+            ;;
+        *)
+            echo "Invalid command line flag $1" >&2
+            return 1
+            ;;
+        esac
+        shift
+    done
+    # Validate type
+    case "$type" in
+    ascii)
+        filter="[:print:]"
+        ;;
+    alphanumeric)
+        filter="a-zA-Z0-9"
+        ;;
+    numeric)
+        filter="0-9"
+        ;;
+    *)
+        echo "Invalid type ${type}" >&2
+        return 1
+        ;;
+    esac
+    # Obtain count + 10 lines from /dev/urandom to ensure that the resulting string has the expected size
+    # Note there is a very small chance of strings starting with EOL character
+    # Therefore, the higher amount of lines read, this will happen less frequently
+    result="$(head -n "$((count + 10))" /dev/urandom | tr -dc "$filter" | head -c "$count")"
+    echo "$result"
+}
+
+########################
+# Create md5 hash from a string
+# Arguments:
+#   $1 - string
+# Returns:
+#   md5 hash - string
+#########################
+generate_md5_hash() {
+    local -r str="${1:?missing input string}"
+    echo -n "$str" | md5sum | awk '{print $1}'
+}
+
+########################
+# Create sha1 hash from a string
+# Arguments:
+#   $1 - string
+#   $2 - algorithm - 1 (default), 224, 256, 384, 512
+# Returns:
+#   sha1 hash - string
+#########################
+generate_sha_hash() {
+    local -r str="${1:?missing input string}"
+    local -r algorithm="${2:-1}"
+    echo -n "$str" | "sha${algorithm}sum" | awk '{print $1}'
+}
+
+########################
+# Converts a string to its hexadecimal representation
+# Arguments:
+#   $1 - string
+# Returns:
+#   hexadecimal representation of the string
+#########################
+convert_to_hex() {
+    local -r str=${1:?missing input string}
+    local -i iterator
+    local char
+    for ((iterator = 0; iterator < ${#str}; iterator++)); do
+        char=${str:iterator:1}
+        printf '%x' "'${char}"
+    done
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libpersistence.sh

@@ -0,0 +1,122 @@
+#!/bin/bash
+#
+# Bitnami persistence library
+# Used for bringing persistence capabilities to applications that don't have clear separation of data and logic
+
+# shellcheck disable=SC1091
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/libfs.sh
+. /opt/bitnami/scripts/libos.sh
+. /opt/bitnami/scripts/liblog.sh
+. /opt/bitnami/scripts/libversion.sh
+
+# Functions
+
+########################
+# Persist an application directory
+# Globals:
+#   BITNAMI_ROOT_DIR
+#   BITNAMI_VOLUME_DIR
+# Arguments:
+#   $1 - App folder name
+#   $2 - List of app files to persist
+# Returns:
+#   true if all steps succeeded, false otherwise
+#########################
+persist_app() {
+    local -r app="${1:?missing app}"
+    local -a files_to_restore
+    read -r -a files_to_persist <<< "$(tr ',;:' ' ' <<< "$2")"
+    local -r install_dir="${BITNAMI_ROOT_DIR}/${app}"
+    local -r persist_dir="${BITNAMI_VOLUME_DIR}/${app}"
+    # Persist the individual files
+    if [[ "${#files_to_persist[@]}" -le 0 ]]; then
+        warn "No files are configured to be persisted"
+        return
+    fi
+    pushd "$install_dir" >/dev/null || exit
+    local file_to_persist_relative file_to_persist_destination file_to_persist_destination_folder
+    local -r tmp_file="/tmp/perms.acl"
+    for file_to_persist in "${files_to_persist[@]}"; do
+        if [[ ! -f "$file_to_persist" && ! -d "$file_to_persist" ]]; then
+            error "Cannot persist '${file_to_persist}' because it does not exist"
+            return 1
+        fi
+        file_to_persist_relative="$(relativize "$file_to_persist" "$install_dir")"
+        file_to_persist_destination="${persist_dir}/${file_to_persist_relative}"
+        file_to_persist_destination_folder="$(dirname "$file_to_persist_destination")"
+        # Get original permissions for existing files, which will be applied later
+        # Exclude the root directory with 'sed', to avoid issues when copying the entirety of it to a volume
+        getfacl -R "$file_to_persist_relative" | sed -E '/# file: (\..+|[^.])/,$!d' > "$tmp_file"
+        # Copy directories to the volume
+        ensure_dir_exists "$file_to_persist_destination_folder"
+        cp -Lr --preserve=links "$file_to_persist_relative" "$file_to_persist_destination_folder"
+        # Restore permissions
+        pushd "$persist_dir" >/dev/null || exit
+        if am_i_root; then
+            setfacl --restore="$tmp_file"
+        else
+            # When running as non-root, don't change ownership
+            setfacl --restore=<(grep -E -v '^# (owner|group):' "$tmp_file")
+        fi
+        popd >/dev/null || exit
+    done
+    popd >/dev/null || exit
+    rm -f "$tmp_file"
+    # Install the persisted files into the installation directory, via symlinks
+    restore_persisted_app "$@"
+}
+
+########################
+# Restore a persisted application directory
+# Globals:
+#   BITNAMI_ROOT_DIR
+#   BITNAMI_VOLUME_DIR
+#   FORCE_MAJOR_UPGRADE
+# Arguments:
+#   $1 - App folder name
+#   $2 - List of app files to restore
+# Returns:
+#   true if all steps succeeded, false otherwise
+#########################
+restore_persisted_app() {
+    local -r app="${1:?missing app}"
+    local -a files_to_restore
+    read -r -a files_to_restore <<< "$(tr ',;:' ' ' <<< "$2")"
+    local -r install_dir="${BITNAMI_ROOT_DIR}/${app}"
+    local -r persist_dir="${BITNAMI_VOLUME_DIR}/${app}"
+    # Restore the individual persisted files
+    if [[ "${#files_to_restore[@]}" -le 0 ]]; then
+        warn "No persisted files are configured to be restored"
+        return
+    fi
+    local file_to_restore_relative file_to_restore_origin file_to_restore_destination
+    for file_to_restore in "${files_to_restore[@]}"; do
+        file_to_restore_relative="$(relativize "$file_to_restore" "$install_dir")"
+        # We use 'realpath --no-symlinks' to ensure that the case of '.' is covered and the directory is removed
+        file_to_restore_origin="$(realpath --no-symlinks "${install_dir}/${file_to_restore_relative}")"
+        file_to_restore_destination="$(realpath --no-symlinks "${persist_dir}/${file_to_restore_relative}")"
+        rm -rf "$file_to_restore_origin"
+        ln -sfn "$file_to_restore_destination" "$file_to_restore_origin"
+    done
+}
+
+########################
+# Check if an application directory was already persisted
+# Globals:
+#   BITNAMI_VOLUME_DIR
+# Arguments:
+#   $1 - App folder name
+# Returns:
+#   true if all steps succeeded, false otherwise
+#########################
+is_app_initialized() {
+    local -r app="${1:?missing app}"
+    local -r persist_dir="${BITNAMI_VOLUME_DIR}/${app}"
+    if ! is_mounted_dir_empty "$persist_dir"; then
+        true
+    else
+        false
+    fi
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libservice.sh

@@ -0,0 +1,273 @@
+#!/bin/bash
+#
+# Library for managing services
+
+# shellcheck disable=SC1091
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/libvalidations.sh
+. /opt/bitnami/scripts/liblog.sh
+
+# Functions
+
+########################
+# Read the provided pid file and returns a PID
+# Arguments:
+#   $1 - Pid file
+# Returns:
+#   PID
+#########################
+get_pid_from_file() {
+    local pid_file="${1:?pid file is missing}"
+
+    if [[ -f "$pid_file" ]]; then
+        if [[ -n "$(< "$pid_file")" ]] && [[ "$(< "$pid_file")" -gt 0 ]]; then
+            echo "$(< "$pid_file")"
+        fi
+    fi
+}
+
+########################
+# Check if a provided PID corresponds to a running service
+# Arguments:
+#   $1 - PID
+# Returns:
+#   Boolean
+#########################
+is_service_running() {
+    local pid="${1:?pid is missing}"
+
+    kill -0 "$pid" 2>/dev/null
+}
+
+########################
+# Stop a service by sending a termination signal to its pid
+# Arguments:
+#   $1 - Pid file
+#   $2 - Signal number (optional)
+# Returns:
+#   None
+#########################
+stop_service_using_pid() {
+    local pid_file="${1:?pid file is missing}"
+    local signal="${2:-}"
+    local pid
+
+    pid="$(get_pid_from_file "$pid_file")"
+    [[ -z "$pid" ]] || ! is_service_running "$pid" && return
+
+    if [[ -n "$signal" ]]; then
+        kill "-${signal}" "$pid"
+    else
+        kill "$pid"
+    fi
+
+    local counter=10
+    while [[ "$counter" -ne 0 ]] && is_service_running "$pid"; do
+        sleep 1
+        counter=$((counter - 1))
+    done
+}
+
+########################
+# Start cron daemon
+# Arguments:
+#   None
+# Returns:
+#   true if started correctly, false otherwise
+#########################
+cron_start() {
+    if [[ -x "/usr/sbin/cron" ]]; then
+        /usr/sbin/cron
+    elif [[ -x "/usr/sbin/crond" ]]; then
+        /usr/sbin/crond
+    else
+        false
+    fi
+}
+
+########################
+# Generate a cron configuration file for a given service
+# Arguments:
+#   $1 - Service name
+#   $2 - Command
+# Flags:
+#   --run-as - User to run as (default: root)
+#   --schedule - Cron schedule configuration (default: * * * * *)
+# Returns:
+#   None
+#########################
+generate_cron_conf() {
+    local service_name="${1:?service name is missing}"
+    local cmd="${2:?command is missing}"
+    local run_as="root"
+    local schedule="* * * * *"
+    local clean="true"
+
+    local clean="true"
+
+    # Parse optional CLI flags
+    shift 2
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            --run-as)
+                shift
+                run_as="$1"
+                ;;
+            --schedule)
+                shift
+                schedule="$1"
+                ;;
+            --no-clean)
+                clean="false"
+                ;;
+            *)
+                echo "Invalid command line flag ${1}" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+
+    mkdir -p /etc/cron.d
+    if "$clean"; then
+        echo "${schedule} ${run_as} ${cmd}" > /etc/cron.d/"$service_name"
+    else
+        echo "${schedule} ${run_as} ${cmd}" >> /etc/cron.d/"$service_name"
+    fi
+}
+
+########################
+# Remove a cron configuration file for a given service
+# Arguments:
+#   $1 - Service name
+# Returns:
+#   None
+#########################
+remove_cron_conf() {
+    local service_name="${1:?service name is missing}"
+    local cron_conf_dir="/etc/monit/conf.d"
+    rm -f "${cron_conf_dir}/${service_name}"
+}
+
+########################
+# Generate a monit configuration file for a given service
+# Arguments:
+#   $1 - Service name
+#   $2 - Pid file
+#   $3 - Start command
+#   $4 - Stop command
+# Flags:
+#   --disable - Whether to disable the monit configuration
+# Returns:
+#   None
+#########################
+generate_monit_conf() {
+    local service_name="${1:?service name is missing}"
+    local pid_file="${2:?pid file is missing}"
+    local start_command="${3:?start command is missing}"
+    local stop_command="${4:?stop command is missing}"
+    local monit_conf_dir="/etc/monit/conf.d"
+    local disabled="no"
+
+    # Parse optional CLI flags
+    shift 4
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            --disable)
+                disabled="yes"
+                ;;
+            *)
+                echo "Invalid command line flag ${1}" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+
+    is_boolean_yes "$disabled" && conf_suffix=".disabled"
+    mkdir -p "$monit_conf_dir"
+    cat >"${monit_conf_dir}/${service_name}.conf${conf_suffix:-}" <<EOF
+check process ${service_name}
+  with pidfile "${pid_file}"
+  start program = "${start_command}" with timeout 90 seconds
+  stop program = "${stop_command}" with timeout 90 seconds
+EOF
+}
+
+########################
+# Remove a monit configuration file for a given service
+# Arguments:
+#   $1 - Service name
+# Returns:
+#   None
+#########################
+remove_monit_conf() {
+    local service_name="${1:?service name is missing}"
+    local monit_conf_dir="/etc/monit/conf.d"
+    rm -f "${monit_conf_dir}/${service_name}.conf"
+}
+
+########################
+# Generate a logrotate configuration file
+# Arguments:
+#   $1 - Service name
+#   $2 - Log files pattern
+# Flags:
+#   --period - Period
+#   --rotations - Number of rotations to store
+#   --extra - Extra options (Optional)
+# Returns:
+#   None
+#########################
+generate_logrotate_conf() {
+    local service_name="${1:?service name is missing}"
+    local log_path="${2:?log path is missing}"
+    local period="weekly"
+    local rotations="150"
+    local extra=""
+    local logrotate_conf_dir="/etc/logrotate.d"
+    local var_name
+    # Parse optional CLI flags
+    shift 2
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            --period|--rotations|--extra)
+                var_name="$(echo "$1" | sed -e "s/^--//" -e "s/-/_/g")"
+                shift
+                declare "$var_name"="${1:?"$var_name" is missing}"
+                ;;
+            *)
+                echo "Invalid command line flag ${1}" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+
+    mkdir -p "$logrotate_conf_dir"
+    cat <<EOF | sed '/^\s*$/d' >"${logrotate_conf_dir}/${service_name}"
+${log_path} {
+  ${period}
+  rotate ${rotations}
+  dateext
+  compress
+  copytruncate
+  missingok
+$(indent "$extra" 2)
+}
+EOF
+}
+
+########################
+# Remove a logrotate configuration file
+# Arguments:
+#   $1 - Service name
+# Returns:
+#   None
+#########################
+remove_logrotate_conf() {
+    local service_name="${1:?service name is missing}"
+    local logrotate_conf_dir="/etc/logrotate.d"
+    rm -f "${logrotate_conf_dir}/${service_name}"
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libvalidations.sh

@@ -0,0 +1,264 @@
+#!/bin/bash
+#
+# Validation functions library
+
+# shellcheck disable=SC1091
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+
+# Functions
+
+########################
+# Check if the provided argument is an integer
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_int() {
+    local -r int="${1:?missing value}"
+    if [[ "$int" =~ ^-?[0-9]+ ]]; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Check if the provided argument is a positive integer
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_positive_int() {
+    local -r int="${1:?missing value}"
+    if is_int "$int" && (( "${int}" >= 0 )); then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Check if the provided argument is a boolean or is the string 'yes/true'
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_boolean_yes() {
+    local -r bool="${1:-}"
+    # comparison is performed without regard to the case of alphabetic characters
+    shopt -s nocasematch
+    if [[ "$bool" = 1 || "$bool" =~ ^(yes|true)$ ]]; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Check if the provided argument is a boolean yes/no value
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_yes_no_value() {
+    local -r bool="${1:-}"
+    if [[ "$bool" =~ ^(yes|no)$ ]]; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Check if the provided argument is a boolean true/false value
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_true_false_value() {
+    local -r bool="${1:-}"
+    if [[ "$bool" =~ ^(true|false)$ ]]; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Check if the provided argument is a boolean 1/0 value
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_1_0_value() {
+    local -r bool="${1:-}"
+    if [[ "$bool" =~ ^[10]$ ]]; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Check if the provided argument is an empty string or not defined
+# Arguments:
+#   $1 - Value to check
+# Returns:
+#   Boolean
+#########################
+is_empty_value() {
+    local -r val="${1:-}"
+    if [[ -z "$val" ]]; then
+        true
+    else
+        false
+    fi
+}
+
+########################
+# Validate if the provided argument is a valid port
+# Arguments:
+#   $1 - Port to validate
+# Returns:
+#   Boolean and error message
+#########################
+validate_port() {
+    local value
+    local unprivileged=0
+
+    # Parse flags
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            -unprivileged)
+                unprivileged=1
+                ;;
+            --)
+                shift
+                break
+                ;;
+            -*)
+                stderr_print "unrecognized flag $1"
+                return 1
+                ;;
+            *)
+                break
+                ;;
+        esac
+        shift
+    done
+
+    if [[ "$#" -gt 1 ]]; then
+        echo "too many arguments provided"
+        return 2
+    elif [[ "$#" -eq 0 ]]; then
+        stderr_print "missing port argument"
+        return 1
+    else
+        value=$1
+    fi
+
+    if [[ -z "$value" ]]; then
+        echo "the value is empty"
+        return 1
+    else
+        if ! is_int "$value"; then
+            echo "value is not an integer"
+            return 2
+        elif [[ "$value" -lt 0 ]]; then
+            echo "negative value provided"
+            return 2
+        elif [[ "$value" -gt 65535 ]]; then
+            echo "requested port is greater than 65535"
+            return 2
+        elif [[ "$unprivileged" = 1 && "$value" -lt 1024 ]]; then
+            echo "privileged port requested"
+            return 3
+        fi
+    fi
+}
+
+########################
+# Validate if the provided argument is a valid IPv4 address
+# Arguments:
+#   $1 - IP to validate
+# Returns:
+#   Boolean
+#########################
+validate_ipv4() {
+    local ip="${1:?ip is missing}"
+    local stat=1
+
+    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+        read -r -a ip_array <<< "$(tr '.' ' ' <<< "$ip")"
+        [[ ${ip_array[0]} -le 255 && ${ip_array[1]} -le 255 \
+            && ${ip_array[2]} -le 255 && ${ip_array[3]} -le 255 ]]
+        stat=$?
+    fi
+    return $stat
+}
+
+########################
+# Validate a string format
+# Arguments:
+#   $1 - String to validate
+# Returns:
+#   Boolean
+#########################
+validate_string() {
+    local string
+    local min_length=-1
+    local max_length=-1
+
+    # Parse flags
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+            -min-length)
+                shift
+                min_length=${1:-}
+                ;;
+            -max-length)
+                shift
+                max_length=${1:-}
+                ;;
+            --)
+                shift
+                break
+                ;;
+            -*)
+                stderr_print "unrecognized flag $1"
+                return 1
+                ;;
+            *)
+                break
+                ;;
+        esac
+        shift
+    done
+
+    if [ "$#" -gt 1 ]; then
+        stderr_print "too many arguments provided"
+        return 2
+    elif [ "$#" -eq 0 ]; then
+        stderr_print "missing string"
+        return 1
+    else
+        string=$1
+    fi
+
+    if [[ "$min_length" -ge 0 ]] && [[ "${#string}" -lt "$min_length" ]]; then
+        echo "string length is less than $min_length"
+        return 1
+    fi
+    if [[ "$max_length" -ge 0 ]] && [[ "${#string}" -gt "$max_length" ]]; then
+        echo "string length is great than $max_length"
+        return 1
+    fi
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libversion.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+#
+# Library for managing versions strings
+
+# shellcheck disable=SC1091
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+
+# Functions
+########################
+# Gets semantic version
+# Arguments:
+#   $1 - version: string to extract major.minor.patch
+#   $2 - section: 1 to extract major, 2 to extract minor, 3 to extract patch
+# Returns:
+#   array with the major, minor and release
+#########################
+get_sematic_version () {
+    local version="${1:?version is required}"
+    local section="${2:?section is required}"
+    local -a version_sections
+
+    #Regex to parse versions: x.y.z
+    local -r regex='([0-9]+)(\.([0-9]+)(\.([0-9]+))?)?'
+
+    if [[ "$version" =~ $regex ]]; then
+        local i=1
+        local j=1
+        local n=${#BASH_REMATCH[*]}
+
+        while [[ $i -lt $n ]]; do
+            if [[ -n "${BASH_REMATCH[$i]}" ]] && [[ "${BASH_REMATCH[$i]:0:1}" != '.' ]];  then
+                version_sections[$j]=${BASH_REMATCH[$i]}
+                ((j++))
+            fi
+            ((i++))
+        done
+
+        local number_regex='^[0-9]+$'
+        if [[ "$section" =~ $number_regex ]] && (( section > 0 )) && (( section <= 3 )); then
+             echo "${version_sections[$section]}"
+             return
+        else
+            stderr_print "Section allowed values are: 1, 2, and 3"
+            return 1
+        fi
+    fi
+}

bitnami/airflow/2/debian-11/prebuildfs/opt/bitnami/scripts/libwebserver.sh

@@ -0,0 +1,458 @@
+#!/bin/bash
+#
+# Bitnami web server handler library
+
+# shellcheck disable=SC1090,SC1091
+
+# Load generic libraries
+. /opt/bitnami/scripts/liblog.sh
+
+########################
+# Execute a command (or list of commands) with the web server environment and library loaded
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_execute() {
+    local -r web_server="${1:?missing web server}"
+    shift
+    # Run program in sub-shell to avoid web server environment getting loaded when not necessary
+    (
+        . "/opt/bitnami/scripts/lib${web_server}.sh"
+        . "/opt/bitnami/scripts/${web_server}-env.sh"
+        "$@"
+    )
+}
+
+########################
+# Prints the list of enabled web servers
+# Globals:
+#   None
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_list() {
+    local -r -a supported_web_servers=(apache nginx)
+    local -a existing_web_servers=()
+    for web_server in "${supported_web_servers[@]}"; do
+        [[ -f "/opt/bitnami/scripts/${web_server}-env.sh" ]] && existing_web_servers+=("$web_server")
+    done
+    echo "${existing_web_servers[@]:-}"
+}
+
+########################
+# Prints the currently-enabled web server type (only one, in order of preference)
+# Globals:
+#   None
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_type() {
+    local -a web_servers
+    read -r -a web_servers <<< "$(web_server_list)"
+    echo "${web_servers[0]:-}"
+}
+
+########################
+# Validate that a supported web server is configured
+# Globals:
+#   None
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_validate() {
+    local error_code=0
+    local supported_web_servers=("apache" "nginx")
+
+    # Auxiliary functions
+    print_validation_error() {
+        error "$1"
+        error_code=1
+    }
+
+    if [[ -z "$(web_server_type)" || ! " ${supported_web_servers[*]} " == *" $(web_server_type) "* ]]; then
+        print_validation_error "Could not detect any supported web servers. It must be one of: ${supported_web_servers[*]}"
+    elif ! web_server_execute "$(web_server_type)" type -t "is_$(web_server_type)_running" >/dev/null; then
+        print_validation_error "Could not load the $(web_server_type) web server library from /opt/bitnami/scripts. Check that it exists and is readable."
+    fi
+
+    return "$error_code"
+}
+
+########################
+# Check whether the web server is running
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   true if the web server is running, false otherwise
+#########################
+is_web_server_running() {
+    "is_$(web_server_type)_running"
+}
+
+########################
+# Start web server
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_start() {
+    info "Starting $(web_server_type) in background"
+    "${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/start.sh"
+}
+
+########################
+# Stop web server
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_stop() {
+    info "Stopping $(web_server_type)"
+    "${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/stop.sh"
+}
+
+########################
+# Restart web server
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_restart() {
+    info "Restarting $(web_server_type)"
+    "${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/restart.sh"
+}
+
+########################
+# Reload web server
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_reload() {
+    "${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/reload.sh"
+}
+
+########################
+# Ensure a web server application configuration exists (i.e. Apache virtual host format or NGINX server block)
+# It serves as a wrapper for the specific web server function
+# Globals:
+#   *
+# Arguments:
+#   $1 - App name
+# Flags:
+#   --type - Application type, which has an effect on which configuration template to use
+#   --hosts - Host listen addresses
+#   --server-name - Server name
+#   --server-aliases - Server aliases
+#   --allow-remote-connections - Whether to allow remote connections or to require local connections
+#   --disable - Whether to render server configurations with a .disabled prefix
+#   --disable-http - Whether to render the app's HTTP server configuration with a .disabled prefix
+#   --disable-https - Whether to render the app's HTTPS server configuration with a .disabled prefix
+#   --http-port - HTTP port number
+#   --https-port - HTTPS port number
+#   --document-root - Path to document root directory
+# Apache-specific flags:
+#   --apache-additional-configuration - Additional vhost configuration (no default)
+#   --apache-additional-http-configuration - Additional HTTP vhost configuration (no default)
+#   --apache-additional-https-configuration - Additional HTTPS vhost configuration (no default)
+#   --apache-before-vhost-configuration - Configuration to add before the <VirtualHost> directive (no default)
+#   --apache-allow-override - Whether to allow .htaccess files (only allowed when --move-htaccess is set to 'no' and type is not defined)
+#   --apache-extra-directory-configuration - Extra configuration for the document root directory
+#   --apache-proxy-address - Address where to proxy requests
+#   --apache-proxy-configuration - Extra configuration for the proxy
+#   --apache-proxy-http-configuration - Extra configuration for the proxy HTTP vhost
+#   --apache-proxy-https-configuration - Extra configuration for the proxy HTTPS vhost
+#   --apache-move-htaccess - Move .htaccess files to a common place so they can be loaded during Apache startup (only allowed when type is not defined)
+# NGINX-specific flags:
+#   --nginx-additional-configuration - Additional server block configuration (no default)
+#   --nginx-external-configuration - Configuration external to server block (no default)
+# Returns:
+#   true if the configuration was enabled, false otherwise
+########################
+ensure_web_server_app_configuration_exists() {
+    local app="${1:?missing app}"
+    shift
+    local -a apache_args nginx_args web_servers args_var
+    apache_args=("$app")
+    nginx_args=("$app")
+    # Validate arguments
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            # Common flags
+            --disable \
+            | --disable-http \
+            | --disable-https \
+            )
+                apache_args+=("$1")
+                nginx_args+=("$1")
+                ;;
+            --hosts \
+            | --server-name \
+            | --server-aliases \
+            | --type \
+            | --allow-remote-connections \
+            | --http-port \
+            | --https-port \
+            | --document-root \
+            )
+                apache_args+=("$1" "${2:?missing value}")
+                nginx_args+=("$1" "${2:?missing value}")
+                shift
+                ;;
+
+            # Specific Apache flags
+            --apache-additional-configuration \
+            | --apache-additional-http-configuration \
+            | --apache-additional-https-configuration \
+            | --apache-before-vhost-configuration \
+            | --apache-allow-override \
+            | --apache-extra-directory-configuration \
+            | --apache-proxy-address \
+            | --apache-proxy-configuration \
+            | --apache-proxy-http-configuration \
+            | --apache-proxy-https-configuration \
+            | --apache-move-htaccess \
+            )
+                apache_args+=("${1//apache-/}" "${2:?missing value}")
+                shift
+                ;;
+
+            # Specific NGINX flags
+            --nginx-additional-configuration \
+            | --nginx-external-configuration)
+                nginx_args+=("${1//nginx-/}" "${2:?missing value}")
+                shift
+                ;;
+
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    read -r -a web_servers <<< "$(web_server_list)"
+    for web_server in "${web_servers[@]}"; do
+        args_var="${web_server}_args[@]"
+        web_server_execute "$web_server" "ensure_${web_server}_app_configuration_exists" "${!args_var}"
+    done
+}
+
+########################
+# Ensure a web server application configuration does not exist anymore (i.e. Apache virtual host format or NGINX server block)
+# It serves as a wrapper for the specific web server function
+# Globals:
+#   *
+# Arguments:
+#   $1 - App name
+# Returns:
+#   true if the configuration was disabled, false otherwise
+########################
+ensure_web_server_app_configuration_not_exists() {
+    local app="${1:?missing app}"
+    local -a web_servers
+    read -r -a web_servers <<< "$(web_server_list)"
+    for web_server in "${web_servers[@]}"; do
+        web_server_execute "$web_server" "ensure_${web_server}_app_configuration_not_exists" "$app"
+    done
+}
+
+########################
+# Ensure the web server loads the configuration for an application in a URL prefix
+# It serves as a wrapper for the specific web server function
+# Globals:
+#   *
+# Arguments:
+#   $1 - App name
+# Flags:
+#   --allow-remote-connections - Whether to allow remote connections or to require local connections
+#   --document-root - Path to document root directory
+#   --prefix - URL prefix from where it will be accessible (i.e. /myapp)
+#   --type - Application type, which has an effect on what configuration template will be used
+# Apache-specific flags:
+#   --apache-additional-configuration - Additional vhost configuration (no default)
+#   --apache-allow-override - Whether to allow .htaccess files (only allowed when --move-htaccess is set to 'no')
+#   --apache-extra-directory-configuration - Extra configuration for the document root directory
+#   --apache-move-htaccess - Move .htaccess files to a common place so they can be loaded during Apache startup
+# NGINX-specific flags:
+#   --nginx-additional-configuration - Additional server block configuration (no default)
+# Returns:
+#   true if the configuration was enabled, false otherwise
+########################
+ensure_web_server_prefix_configuration_exists() {
+    local app="${1:?missing app}"
+    shift
+    local -a apache_args nginx_args web_servers args_var
+    apache_args=("$app")
+    nginx_args=("$app")
+    # Validate arguments
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            # Common flags
+            --allow-remote-connections \
+            | --document-root \
+            | --prefix \
+            | --type \
+            )
+                apache_args+=("$1" "${2:?missing value}")
+                nginx_args+=("$1" "${2:?missing value}")
+                shift
+                ;;
+
+            # Specific Apache flags
+            --apache-additional-configuration \
+            | --apache-allow-override \
+            | --apache-extra-directory-configuration \
+            | --apache-move-htaccess \
+            )
+                apache_args+=("${1//apache-/}" "$2")
+                shift
+                ;;
+
+            # Specific NGINX flags
+            --nginx-additional-configuration)
+                nginx_args+=("${1//nginx-/}" "$2")
+                shift
+                ;;
+
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    read -r -a web_servers <<< "$(web_server_list)"
+    for web_server in "${web_servers[@]}"; do
+        args_var="${web_server}_args[@]"
+        web_server_execute "$web_server" "ensure_${web_server}_prefix_configuration_exists" "${!args_var}"
+    done
+}
+
+########################
+# Ensure a web server application configuration is updated with the runtime configuration (i.e. ports)
+# It serves as a wrapper for the specific web server function
+# Globals:
+#   *
+# Arguments:
+#   $1 - App name
+# Flags:
+#   --hosts - Host listen addresses
+#   --server-name - Server name
+#   --server-aliases - Server aliases
+#   --enable-http - Enable HTTP app configuration (if not enabled already)
+#   --enable-https - Enable HTTPS app configuration (if not enabled already)
+#   --disable-http - Disable HTTP app configuration (if not disabled already)
+#   --disable-https - Disable HTTPS app configuration (if not disabled already)
+#   --http-port - HTTP port number
+#   --https-port - HTTPS port number
+# Returns:
+#   true if the configuration was updated, false otherwise
+########################
+web_server_update_app_configuration() {
+    local app="${1:?missing app}"
+    shift
+    local -a args web_servers
+    args=("$app")
+    # Validate arguments
+    while [[ "$#" -gt 0 ]]; do
+        case "$1" in
+            # Common flags
+            --enable-http \
+            | --enable-https \
+            | --disable-http \
+            | --disable-https \
+            )
+                args+=("$1")
+                ;;
+            --hosts \
+            | --server-name \
+            | --server-aliases \
+            | --http-port \
+            | --https-port \
+            )
+                args+=("$1" "${2:?missing value}")
+                shift
+                ;;
+
+            *)
+                echo "Invalid command line flag $1" >&2
+                return 1
+                ;;
+        esac
+        shift
+    done
+    read -r -a web_servers <<< "$(web_server_list)"
+    for web_server in "${web_servers[@]}"; do
+        web_server_execute "$web_server" "${web_server}_update_app_configuration" "${args[@]}"
+    done
+}
+
+########################
+# Enable loading page, which shows users that the initialization process is not yet completed
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_enable_loading_page() {
+    ensure_web_server_app_configuration_exists "__loading" --hosts "_default_" \
+        --apache-additional-configuration "
+# Show a HTTP 503 Service Unavailable page by default
+RedirectMatch 503 ^/$
+# Show index.html if server is answering with 404 Not Found or 503 Service Unavailable status codes
+ErrorDocument 404 /index.html
+ErrorDocument 503 /index.html" \
+        --nginx-additional-configuration "
+# Show a HTTP 503 Service Unavailable page by default
+location / {
+  return 503;
+}
+# Show index.html if server is answering with 404 Not Found or 503 Service Unavailable status codes
+error_page 404 @installing;
+error_page 503 @installing;
+location @installing {
+  rewrite ^(.*)$ /index.html break;
+}"
+    web_server_reload
+}
+
+########################
+# Enable loading page, which shows users that the initialization process is not yet completed
+# Globals:
+#   *
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+web_server_disable_install_page() {
+    ensure_web_server_app_configuration_not_exists "__loading"
+    web_server_reload
+}

bitnami/airflow/2/debian-11/prebuildfs/usr/sbin/install_packages

@@ -0,0 +1,24 @@
+#!/bin/sh
+set -e
+set -u
+export DEBIAN_FRONTEND=noninteractive
+n=0
+max=2
+until [ $n -gt $max ]; do
+    set +e
+    (
+      apt-get update -qq &&
+      apt-get install -y --no-install-recommends "$@"
+    )
+    CODE=$?
+    set -e
+    if [ $CODE -eq 0 ]; then
+        break
+    fi
+    if [ $n -eq $max ]; then
+        exit $CODE
+    fi
+    echo "apt failed, retrying"
+    n=$(($n + 1))
+done
+rm -r /var/lib/apt/lists /var/cache/apt/archives

bitnami/airflow/2/debian-11/rootfs/opt/bitnami/scripts/airflow-env.sh

@@ -0,0 +1,146 @@
+#!/bin/bash
+#
+# Environment configuration for airflow
+
+# The values for all environment variables will be set in the below order of precedence
+# 1. Custom environment variables defined below after Bitnami defaults
+# 2. Constants defined in this file (environment variables with no default), i.e. BITNAMI_ROOT_DIR
+# 3. Environment variables overridden via external files using *_FILE variables (see below)
+# 4. Environment variables set externally (i.e. current Bash context/Dockerfile/userdata)
+
+# Load logging library
+# shellcheck disable=SC1090,SC1091
+. /opt/bitnami/scripts/liblog.sh
+
+export BITNAMI_ROOT_DIR="/opt/bitnami"
+export BITNAMI_VOLUME_DIR="/bitnami"
+
+# Logging configuration
+export MODULE="${MODULE:-airflow}"
+export BITNAMI_DEBUG="${BITNAMI_DEBUG:-false}"
+
+# By setting an environment variable matching *_FILE to a file path, the prefixed environment
+# variable will be overridden with the value specified in that file
+airflow_env_vars=(
+    AIRFLOW_USERNAME
+    AIRFLOW_PASSWORD
+    AIRFLOW_FIRSTNAME
+    AIRFLOW_LASTNAME
+    AIRFLOW_EMAIL
+    AIRFLOW_EXECUTOR
+    AIRFLOW_FERNET_KEY
+    AIRFLOW_SECRET_KEY
+    AIRFLOW_WEBSERVER_HOST
+    AIRFLOW_WEBSERVER_PORT_NUMBER
+    AIRFLOW_LOAD_EXAMPLES
+    AIRFLOW_BASE_URL
+    AIRFLOW_HOSTNAME_CALLABLE
+    AIRFLOW_POOL_NAME
+    AIRFLOW_POOL_SIZE
+    AIRFLOW_POOL_DESC
+    AIRFLOW_DATABASE_HOST
+    AIRFLOW_DATABASE_PORT_NUMBER
+    AIRFLOW_DATABASE_NAME
+    AIRFLOW_DATABASE_USERNAME
+    AIRFLOW_DATABASE_PASSWORD
+    AIRFLOW_DATABASE_USE_SSL
+    AIRFLOW_REDIS_USE_SSL
+    REDIS_HOST
+    REDIS_PORT_NUMBER
+    REDIS_USER
+    REDIS_PASSWORD
+    REDIS_DATABASE
+    AIRFLOW_LDAP_ENABLE
+    AIRFLOW_LDAP_URI
+    AIRFLOW_LDAP_SEARCH
+    AIRFLOW_LDAP_UID_FIELD
+    AIRFLOW_LDAP_BIND_USER
+    AIRFLOW_LDAP_BIND_PASSWORD
+    AIRFLOW_LDAP_USER_REGISTRATION
+    AIRFLOW_LDAP_USER_REGISTRATION_ROLE
+    AIRFLOW_LDAP_ROLES_MAPPING
+    AIRFLOW_LDAP_ROLES_SYNC_AT_LOGIN
+    AIRFLOW_LDAP_USE_TLS
+    AIRFLOW_LDAP_ALLOW_SELF_SIGNED
+    AIRFLOW_LDAP_TLS_CA_CERTIFICATE
+)
+for env_var in "${airflow_env_vars[@]}"; do
+    file_env_var="${env_var}_FILE"
+    if [[ -n "${!file_env_var:-}" ]]; then
+        if [[ -r "${!file_env_var:-}" ]]; then
+            export "${env_var}=$(< "${!file_env_var}")"
+            unset "${file_env_var}"
+        else
+            warn "Skipping export of '${env_var}'. '${!file_env_var:-}' is not readable."
+        fi
+    fi
+done
+unset airflow_env_vars
+
+# Airflow paths
+export AIRFLOW_BASE_DIR="${BITNAMI_ROOT_DIR}/airflow"
+export AIRFLOW_HOME="${AIRFLOW_BASE_DIR}"
+export AIRFLOW_BIN_DIR="${AIRFLOW_BASE_DIR}/venv/bin"
+export AIRFLOW_LOGS_DIR="${AIRFLOW_BASE_DIR}/logs"
+export AIRFLOW_SCHEDULER_LOGS_DIR="${AIRFLOW_LOGS_DIR}/scheduler"
+export AIRFLOW_LOG_FILE="${AIRFLOW_LOGS_DIR}/airflow-webserver.log"
+export AIRFLOW_CONF_FILE="${AIRFLOW_BASE_DIR}/airflow.cfg"
+export AIRFLOW_WEBSERVER_CONF_FILE="${AIRFLOW_BASE_DIR}/webserver_config.py"
+export AIRFLOW_TMP_DIR="${AIRFLOW_BASE_DIR}/tmp"
+export AIRFLOW_PID_FILE="${AIRFLOW_TMP_DIR}/airflow-webserver.pid"
+export AIRFLOW_DAGS_DIR="${AIRFLOW_BASE_DIR}/dags"
+
+# System users (when running with a privileged user)
+export AIRFLOW_DAEMON_USER="airflow"
+export AIRFLOW_DAEMON_GROUP="airflow"
+
+# User configuration
+export AIRFLOW_USERNAME="${AIRFLOW_USERNAME:-user}"
+export AIRFLOW_PASSWORD="${AIRFLOW_PASSWORD:-bitnami}"
+export AIRFLOW_FIRSTNAME="${AIRFLOW_FIRSTNAME:-Firstname}"
+export AIRFLOW_LASTNAME="${AIRFLOW_LASTNAME:-Lastname}"
+export AIRFLOW_EMAIL="${AIRFLOW_EMAIL:-user@example.com}"
+
+# Airflow configuration
+export AIRFLOW_EXECUTOR="${AIRFLOW_EXECUTOR:-SequentialExecutor}"
+export AIRFLOW_FERNET_KEY="${AIRFLOW_FERNET_KEY:-}"
+export AIRFLOW_SECRET_KEY="${AIRFLOW_SECRET_KEY:-}"
+export AIRFLOW_WEBSERVER_HOST="${AIRFLOW_WEBSERVER_HOST:-127.0.0.1}"
+export AIRFLOW_WEBSERVER_PORT_NUMBER="${AIRFLOW_WEBSERVER_PORT_NUMBER:-8080}"
+export AIRFLOW_LOAD_EXAMPLES="${AIRFLOW_LOAD_EXAMPLES:-yes}"
+export AIRFLOW_BASE_URL="${AIRFLOW_BASE_URL:-}"
+export AIRFLOW_HOSTNAME_CALLABLE="${AIRFLOW_HOSTNAME_CALLABLE:-}"
+export AIRFLOW_POOL_NAME="${AIRFLOW_POOL_NAME:-}"
+export AIRFLOW_POOL_SIZE="${AIRFLOW_POOL_SIZE:-}"
+export AIRFLOW_POOL_DESC="${AIRFLOW_POOL_DESC:-}"
+
+# Airflow database configuration
+export AIRFLOW_DATABASE_HOST="${AIRFLOW_DATABASE_HOST:-postgresql}"
+export AIRFLOW_DATABASE_PORT_NUMBER="${AIRFLOW_DATABASE_PORT_NUMBER:-5432}"
+export AIRFLOW_DATABASE_NAME="${AIRFLOW_DATABASE_NAME:-bitnami_airflow}"
+export AIRFLOW_DATABASE_USERNAME="${AIRFLOW_DATABASE_USERNAME:-bn_airflow}"
+export AIRFLOW_DATABASE_PASSWORD="${AIRFLOW_DATABASE_PASSWORD:-}"
+export AIRFLOW_DATABASE_USE_SSL="${AIRFLOW_DATABASE_USE_SSL:-no}"
+export AIRFLOW_REDIS_USE_SSL="${AIRFLOW_REDIS_USE_SSL:-no}"
+export REDIS_HOST="${REDIS_HOST:-redis}"
+export REDIS_PORT_NUMBER="${REDIS_PORT_NUMBER:-6379}"
+export REDIS_USER="${REDIS_USER:-}"
+export REDIS_PASSWORD="${REDIS_PASSWORD:-}"
+export REDIS_DATABASE="${REDIS_DATABASE:-1}"
+
+# Airflow LDAP configuration
+export AIRFLOW_LDAP_ENABLE="${AIRFLOW_LDAP_ENABLE:-no}"
+export AIRFLOW_LDAP_URI="${AIRFLOW_LDAP_URI:-}"
+export AIRFLOW_LDAP_SEARCH="${AIRFLOW_LDAP_SEARCH:-}"
+export AIRFLOW_LDAP_UID_FIELD="${AIRFLOW_LDAP_UID_FIELD:-}"
+export AIRFLOW_LDAP_BIND_USER="${AIRFLOW_LDAP_BIND_USER:-}"
+export AIRFLOW_LDAP_BIND_PASSWORD="${AIRFLOW_LDAP_BIND_PASSWORD:-}"
+export AIRFLOW_LDAP_USER_REGISTRATION="${AIRFLOW_LDAP_USER_REGISTRATION:-True}"
+export AIRFLOW_LDAP_USER_REGISTRATION_ROLE="${AIRFLOW_LDAP_USER_REGISTRATION_ROLE:-}"
+export AIRFLOW_LDAP_ROLES_MAPPING="${AIRFLOW_LDAP_ROLES_MAPPING:-}"
+export AIRFLOW_LDAP_ROLES_SYNC_AT_LOGIN="${AIRFLOW_LDAP_ROLES_SYNC_AT_LOGIN:-True}"
+export AIRFLOW_LDAP_USE_TLS="${AIRFLOW_LDAP_USE_TLS:-False}"
+export AIRFLOW_LDAP_ALLOW_SELF_SIGNED="${AIRFLOW_LDAP_ALLOW_SELF_SIGNED:-True}"
+export AIRFLOW_LDAP_TLS_CA_CERTIFICATE="${AIRFLOW_LDAP_TLS_CA_CERTIFICATE:-}"
+
+# Custom environment variables may be defined below

bitnami/airflow/2/debian-11/rootfs/opt/bitnami/scripts/airflow/entrypoint.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# shellcheck disable=SC1091
+
+set -o errexit
+set -o nounset
+set -o pipefail
+# set -o xtrace # Uncomment this line for debugging purpose
+
+# Load Airflow environment variables
+. /opt/bitnami/scripts/airflow-env.sh
+
+# Load libraries
+. /opt/bitnami/scripts/libbitnami.sh
+. /opt/bitnami/scripts/libairflow.sh
+
+print_welcome_page
+
+if ! am_i_root && [[ -e "$LIBNSS_WRAPPER_PATH" ]]; then
+    info "Enabling non-root system user with nss_wrapper"
+    echo "airflow:x:$(id -u):$(id -g):Airflow:$AIRFLOW_HOME:/bin/false" > "$NSS_WRAPPER_PASSWD"
+    echo "airflow:x:$(id -g):" > "$NSS_WRAPPER_GROUP"
+
+    export LD_PRELOAD="$LIBNSS_WRAPPER_PATH"
+fi
+
+# Install custom python package if requirements.txt is present
+if [[ -f "/bitnami/python/requirements.txt" ]]; then
+    . /opt/bitnami/airflow/venv/bin/activate
+    pip install -r /bitnami/python/requirements.txt
+    deactivate
+fi
+
+if [[ "$*" = *"/opt/bitnami/scripts/airflow/run.sh"* || "$*" = *"/run.sh"* ]]; then
+    info "** Starting Airflow setup **"
+    /opt/bitnami/scripts/postgresql-client/setup.sh
+    /opt/bitnami/scripts/airflow/setup.sh
+    info "** Airflow setup finished! **"
+fi
+
+echo ""
+exec "$@"

bitnami/airflow/2/debian-11/rootfs/opt/bitnami/scripts/airflow/postunpack.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+# shellcheck disable=SC1091
+
+set -o errexit
+set -o nounset
+set -o pipefail
+# set -o xtrace # Uncomment this line for debugging purpose
+
+# Load Airflow environment variables
+. /opt/bitnami/scripts/airflow-env.sh
+
+# Load libraries
+. /opt/bitnami/scripts/libairflow.sh
+. /opt/bitnami/scripts/libfs.sh
+. /opt/bitnami/scripts/libos.sh
+
+ensure_dir_exists "$AIRFLOW_BASE_DIR"
+# Ensure the needed directories exist with write permissions
+for dir in "$AIRFLOW_TMP_DIR" "$AIRFLOW_LOGS_DIR" "$AIRFLOW_SCHEDULER_LOGS_DIR" "$AIRFLOW_DAGS_DIR"; do
+    ensure_dir_exists "$dir"
+    configure_permissions_ownership "$dir" -d "775" -f "664" -g "root"
+done
+
+chmod -R g+rwX "$AIRFLOW_BASE_DIR"

bitnami/airflow/2/debian-11/rootfs/opt/bitnami/scripts/airflow/run.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# shellcheck disable=SC1091
+
+set -o errexit
+set -o nounset
+set -o pipefail
+# set -o xtrace # Uncomment this line for debugging purposes
+
+# Load Airflow environment variables
+. /opt/bitnami/scripts/airflow-env.sh
+
+# Load libraries
+. /opt/bitnami/scripts/libos.sh
+. /opt/bitnami/scripts/libairflow.sh
+
+args=("--pid" "$AIRFLOW_PID_FILE" "$@")
+
+info "** Starting Airflow **"
+if am_i_root; then
+    exec gosu "$AIRFLOW_DAEMON_USER" "${AIRFLOW_BIN_DIR}/airflow" "webserver" "${args[@]}"
+else
+    exec "${AIRFLOW_BIN_DIR}/airflow" "webserver" "${args[@]}"
+fi

bitnami/airflow/2/debian-11/rootfs/opt/bitnami/scripts/airflow/setup.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# shellcheck disable=SC1091
+
+set -o errexit
+set -o nounset
+set -o pipefail
+# set -o xtrace # Uncomment this line for debugging purposes
+
+# Load Airflow environment variables
+. /opt/bitnami/scripts/airflow-env.sh
+
+# Load PostgreSQL Client environment for 'postgresql_remote_execute' (after 'airflow-env.sh' so that MODULE is not set to a wrong value)
+if [[ -f /opt/bitnami/scripts/postgresql-client-env.sh ]]; then
+    . /opt/bitnami/scripts/postgresql-client-env.sh
+elif [[ -f /opt/bitnami/scripts/postgresql-env.sh ]]; then
+    . /opt/bitnami/scripts/postgresql-env.sh
+fi
+
+# Load libraries
+. /opt/bitnami/scripts/libos.sh
+. /opt/bitnami/scripts/libfs.sh
+. /opt/bitnami/scripts/libairflow.sh
+
+# Ensure Airflow environment variables settings are valid
+airflow_validate
+# Ensure Airflow daemon user exists when running as root
+am_i_root && ensure_user_exists "$AIRFLOW_DAEMON_USER" --group "$AIRFLOW_DAEMON_GROUP"
+# Ensure Airflow is initialized
+airflow_initialize

bitnami/airflow/2/debian-11/rootfs/opt/bitnami/scripts/libairflow.sh

@@ -0,0 +1,455 @@
+#!/bin/bash
+
+# Bitnami Airflow library
+
+# shellcheck disable=SC1091,SC2153
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/libfile.sh
+. /opt/bitnami/scripts/liblog.sh
+. /opt/bitnami/scripts/libnet.sh
+. /opt/bitnami/scripts/libos.sh
+. /opt/bitnami/scripts/libservice.sh
+. /opt/bitnami/scripts/libvalidations.sh
+. /opt/bitnami/scripts/libpersistence.sh
+
+# Load database library
+if [[ -f /opt/bitnami/scripts/libpostgresqlclient.sh ]]; then
+    . /opt/bitnami/scripts/libpostgresqlclient.sh
+elif [[ -f /opt/bitnami/scripts/libpostgresql.sh ]]; then
+    . /opt/bitnami/scripts/libpostgresql.sh
+fi
+
+# Functions
+
+########################
+# Validate Airflow inputs
+# Globals:
+#   AIRFLOW_*
+# Arguments:
+#   None
+# Returns:
+#   0 if the validation succeeded, 1 otherwise
+#########################
+airflow_validate() {
+    local error_code=0
+
+    # Auxiliary functions
+    print_validation_error() {
+        error "$1"
+        error_code=1
+    }
+
+    check_multi_value() {
+        if [[ " ${2} " != *" ${!1} "* ]]; then
+            print_validation_error "The allowed values for ${1} are: ${2}"
+        fi
+    }
+
+    # Check postgresql host
+    [[ -z "$AIRFLOW_DATABASE_HOST" ]] && print_validation_error "Missing AIRFLOW_DATABASE_HOST"
+
+    # Check LDAP parameters
+    if is_boolean_yes "$AIRFLOW_LDAP_ENABLE"; then
+        [[ -z "$AIRFLOW_LDAP_URI" ]] && print_validation_error "Missing AIRFLOW_LDAP_URI"
+        [[ -z "$AIRFLOW_LDAP_SEARCH" ]] && print_validation_error "Missing AIRFLOW_LDAP_SEARCH"
+        [[ -z "$AIRFLOW_LDAP_UID_FIELD" ]] && print_validation_error "Missing AIRFLOW_LDAP_UID_FIELD"
+        [[ -z "$AIRFLOW_LDAP_BIND_USER" ]] && print_validation_error "Missing AIRFLOW_LDAP_BIND_USER"
+        [[ -z "$AIRFLOW_LDAP_BIND_PASSWORD" ]] && print_validation_error "Missing AIRFLOW_LDAP_BIND_PASSWORD"
+        [[ -z "$AIRFLOW_LDAP_ROLES_MAPPING" ]] && print_validation_error "Missing AIRFLOW_LDAP_ROLES_MAPPING"
+        [[ -z "$AIRFLOW_LDAP_ROLES_SYNC_AT_LOGIN" ]] && print_validation_error "Missing AIRFLOW_LDAP_ROLES_SYNC_AT_LOGIN"
+        [[ -z "$AIRFLOW_LDAP_USER_REGISTRATION" ]] && print_validation_error "Missing AIRFLOW_LDAP_USER_REGISTRATION"
+        [[ -z "$AIRFLOW_LDAP_USER_REGISTRATION_ROLE" ]] && print_validation_error "Missing AIRFLOW_LDAP_USER_REGISTRATION_ROLE"
+
+        # Chack boolean env vars contain valid values
+        for var in "AIRFLOW_LDAP_USER_REGISTRATION" "AIRFLOW_LDAP_ROLES_SYNC_AT_LOGIN" "AIRFLOW_LDAP_USE_TLS"; do
+            check_multi_value "$var" "True False"
+        done
+
+        if [[ "$AIRFLOW_LDAP_USE_TLS" == "True" ]]; then
+            [[ -z "$AIRFLOW_LDAP_ALLOW_SELF_SIGNED" ]] && print_validation_error "Missing AIRFLOW_LDAP_ALLOW_SELF_SIGNED"
+            [[ -z "$AIRFLOW_LDAP_TLS_CA_CERTIFICATE" ]] && print_validation_error "Missing AIRFLOW_LDAP_TLS_CA_CERTIFICATE"
+        fi
+
+    fi
+
+    # Check pool parameters
+    if [[ -n "$AIRFLOW_POOL_NAME" ]]; then
+        [[ -z "$AIRFLOW_POOL_DESC" ]] && print_validation_error "Provided AIRFLOW_POOL_NAME but missing AIRFLOW_POOL_DESC"
+        [[ -z "$AIRFLOW_POOL_SIZE" ]] && print_validation_error "Provided AIRFLOW_POOL_NAME but missing AIRFLOW_POOL_SIZE"
+    fi
+
+    return "$error_code"
+}
+
+########################
+# Ensure Airflow is initialized
+# Globals:
+#   AIRFLOW_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_initialize() {
+    info "Initializing Airflow ..."
+
+    # Change permissions if running as root
+    for dir in "$AIRFLOW_TMP_DIR" "$AIRFLOW_LOGS_DIR" "$AIRFLOW_DAGS_DIR"; do
+        ensure_dir_exists "$dir"
+        am_i_root && chown "$AIRFLOW_DAEMON_USER:$AIRFLOW_DAEMON_GROUP" "$dir"
+    done
+
+    # The configuration file is not persisted. If it is not provided, generate it based on env vars
+    if [[ ! -f "$AIRFLOW_CONF_FILE" ]]; then
+        info "No injected configuration file found. Creating default config file"
+        airflow_generate_config
+    else
+        info "Configuration file found, loading configuration"
+    fi
+
+    info "Trying to connect to the database server"
+    airflow_wait_for_postgresql_connection
+    # Check if the Airflow database has been already initialized
+    if ! debug_execute airflow db check-migrations; then
+        # Delete pid file
+        rm -f "$AIRFLOW_PID_FILE"
+
+        # Initialize database
+        info "Populating database"
+        debug_execute airflow db init
+
+        airflow_create_admin_user
+        airflow_create_pool
+    else
+        # Upgrade database
+        info "Upgrading database schema"
+        debug_execute airflow db upgrade
+        true # Avoid return false when I am not root
+    fi
+}
+
+########################
+# Generate Airflow conf file
+# Globals:
+#   AIRFLOW_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_generate_config() {
+    # Generate Airflow default files
+    debug_execute airflow version
+
+    # Setup Airflow base URL
+    airflow_configure_base_url
+    # Configure Airflow Hostname
+    [[ -n "$AIRFLOW_HOSTNAME_CALLABLE" ]] && airflow_conf_set "core" "hostname_callable" "$AIRFLOW_HOSTNAME_CALLABLE"
+    # Configure Airflow webserver authentication
+    airflow_configure_webserver_authentication
+    # Configure Airflow to load examples
+    if is_boolean_yes "$AIRFLOW_LOAD_EXAMPLES"; then
+        airflow_conf_set "core" "load_examples" "True"
+    else
+        airflow_conf_set "core" "load_examples" "False"
+    fi
+    # Configure Airflow database
+    airflow_configure_database
+
+    # Configure the Webserver port
+    airflow_conf_set "webserver" "web_server_port" "$AIRFLOW_WEBSERVER_PORT_NUMBER"
+
+    # Setup the secret keys for database connection and flask application (fernet key and secret key)
+    # ref: https://airflow.apache.org/docs/apache-airflow/stable/configurations-ref.html#fernet-key
+    # ref: https://airflow.apache.org/docs/apache-airflow/stable/configurations-ref.html#secret-key
+    [[ -n "$AIRFLOW_FERNET_KEY" ]] && airflow_conf_set "core" "fernet_key" "$AIRFLOW_FERNET_KEY"
+    [[ -n "$AIRFLOW_SECRET_KEY" ]] && airflow_conf_set "webserver" "secret_key" "$AIRFLOW_SECRET_KEY"
+
+    # Configure Airflow executor
+    airflow_conf_set "core" "executor" "$AIRFLOW_EXECUTOR"
+    [[ "$AIRFLOW_EXECUTOR" == "CeleryExecutor" || "$AIRFLOW_EXECUTOR" == "CeleryKubernetesExecutor" ]] && airflow_configure_celery_executor
+    true # Avoid the function to fail due to the check above
+}
+
+########################
+# Set property on the Airflow configuration file
+# Globals:
+#   AIRFLOW_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_conf_set() {
+    local -r section="${1:?section is required}"
+    local -r key="${2:?key is required}"
+    local -r value="${3:?value is required}"
+    local -r file="${4:-${AIRFLOW_CONF_FILE}}"
+
+    ini-file set --section "$section" --key "$key" --value "$value" "$file"
+}
+
+########################
+# Configure Airflow base url
+# Globals:
+#   AIRFLOW_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_configure_base_url() {
+    if [[ -z "$AIRFLOW_BASE_URL" ]]; then
+        airflow_conf_set "webserver" "base_url" "http://${AIRFLOW_WEBSERVER_HOST}:${AIRFLOW_WEBSERVER_PORT_NUMBER}"
+    else
+        airflow_conf_set "webserver" "base_url" "$AIRFLOW_BASE_URL"
+    fi
+}
+
+########################
+# Configure Airflow webserver authentication
+# Globals:
+#   AIRFLOW_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_configure_webserver_authentication() {
+    info "Configuring Airflow webserver authentication"
+    airflow_conf_set "webserver" "rbac" "true"
+
+    if is_boolean_yes "$AIRFLOW_LDAP_ENABLE"; then
+        info "Enabling LDAP authentication"
+        # Based on PR https://github.com/apache/airflow/pull/16647
+        replace_in_file "$AIRFLOW_WEBSERVER_CONF_FILE" "# from airflow.www.fab_security.manager import AUTH_LDAP" "from airflow.www.fab_security.manager import AUTH_LDAP"
+        replace_in_file "$AIRFLOW_WEBSERVER_CONF_FILE" "from airflow.www.fab_security.manager import AUTH_DB" "# from airflow.www.fab_security.manager import AUTH_DB"
+
+        # webserver config
+        airflow_webserver_conf_set "AUTH_TYPE" "AUTH_LDAP"
+        airflow_webserver_conf_set "AUTH_LDAP_SERVER" "$AIRFLOW_LDAP_URI" "yes"
+
+        # searches
+        airflow_webserver_conf_set "AUTH_LDAP_SEARCH" "$AIRFLOW_LDAP_SEARCH" "yes"
+        airflow_webserver_conf_set "AUTH_LDAP_UID_FIELD" "$AIRFLOW_LDAP_UID_FIELD" "yes"
+
+        # Special account for searches
+        airflow_webserver_conf_set "AUTH_LDAP_BIND_USER" "$AIRFLOW_LDAP_BIND_USER" "yes"
+        airflow_webserver_conf_set "AUTH_LDAP_BIND_PASSWORD" "$AIRFLOW_LDAP_BIND_PASSWORD" "yes"
+
+        # User self registration
+        airflow_webserver_conf_set "AUTH_USER_REGISTRATION" "$AIRFLOW_LDAP_USER_REGISTRATION"
+        airflow_webserver_conf_set "AUTH_USER_REGISTRATION_ROLE" "$AIRFLOW_LDAP_USER_REGISTRATION_ROLE" "yes"
+
+        # Mapping from LDAP DN to list of FAB roles
+        airflow_webserver_conf_set "AUTH_ROLES_MAPPING" "$AIRFLOW_LDAP_ROLES_MAPPING"
+
+        # Replace user's roles at login
+        airflow_webserver_conf_set "AUTH_ROLES_SYNC_AT_LOGIN" "$AIRFLOW_LDAP_ROLES_SYNC_AT_LOGIN"
+
+        # Allowing/Denying of self signed certs for StartTLS OR SSL ldaps:// connections
+        airflow_webserver_conf_set "AUTH_LDAP_ALLOW_SELF_SIGNED" "$AIRFLOW_LDAP_ALLOW_SELF_SIGNED"
+
+        # If StartTLS supply cert
+        if [[ "$AIRFLOW_LDAP_USE_TLS" == "True" ]]; then
+            airflow_webserver_conf_set "AUTH_LDAP_TLS_CACERTFILE" "$AIRFLOW_LDAP_TLS_CA_CERTIFICATE" "yes"
+        fi
+    fi
+}
+
+########################
+# Set properties in Airflow's webserver_config.py
+# Globals:
+#   AIRFLOW_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_webserver_conf_set() {
+    local -r key="${1:?missing key}"
+    local -r value="${2:?missing key}"
+    local -r is_literal="${3:-no}"
+    shift 2
+
+    local -r file="$AIRFLOW_WEBSERVER_CONF_FILE"
+    # Check if the value was set before
+    if grep -q "^#*\\s*${key} =.*$" "$file"; then
+        local entry
+        is_boolean_yes "$is_literal" && entry="${key} = '${value}'" || entry="${key} = ${value}"
+        # Update the existing key
+        replace_in_file "$file" "^#*\\s*${key} =.*$" "$entry" false
+    else
+        # Add a new key
+        local new_value="$value"
+        is_boolean_yes "$is_literal" && new_value="'${value}'"
+        printf '\n%s = %s' "$key" "$new_value" >>"$file"
+    fi
+}
+
+########################
+# Configure Airflow database
+# Globals:
+#   AIRFLOW_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_configure_database() {
+    local -r user=$(airflow_encode_url "$AIRFLOW_DATABASE_USERNAME")
+    local -r password=$(airflow_encode_url "$AIRFLOW_DATABASE_PASSWORD")
+    local extra_options
+    is_boolean_yes "$AIRFLOW_DATABASE_USE_SSL" && extra_options="?sslmode=require"
+
+    info "Configuring Airflow database"
+    airflow_conf_set "database" "sql_alchemy_conn" "postgresql+psycopg2://${user}:${password}@${AIRFLOW_DATABASE_HOST}:${AIRFLOW_DATABASE_PORT_NUMBER}/${AIRFLOW_DATABASE_NAME}${extra_options:-}"
+}
+
+########################
+# Return URL encoded string in the airflow conf format
+# Globals:
+#   AIRFLOW_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_encode_url() {
+    local -r url="${1?Missing url}"
+
+    urlencode() {
+        old_lc_collate="${LC_COLLATE:-}"
+        LC_COLLATE=C
+
+        local length="${#1}"
+        for ((i = 0; i < length; i++)); do
+            local c="${1:$i:1}"
+            case $c in
+            [a-zA-Z0-9.~_-]) printf '%s' "$c" ;;
+            *) printf '%%%02X' "'$c" ;;
+            esac
+        done
+
+        LC_COLLATE="$old_lc_collate"
+    }
+
+    local -r url_encoded=$(urlencode "$url")
+    # Replace % by %%
+    echo "${url_encoded//\%/\%\%}"
+}
+
+########################
+# Configure Airflow celery executor
+# Globals:
+#   AIRFLOW_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_configure_celery_executor() {
+    info "Configuring Celery Executor"
+
+    # Configure celery Redis url
+    local -r redis_user=$(airflow_encode_url "$REDIS_USER")
+    local -r redis_password=$(airflow_encode_url "$REDIS_PASSWORD")
+    airflow_conf_set "celery" "broker_url" "redis://${redis_user}:${redis_password}@${REDIS_HOST}:${REDIS_PORT_NUMBER}/${REDIS_DATABASE}"
+    is_boolean_yes "$AIRFLOW_REDIS_USE_SSL" && airflow_conf_set "celery" "redis_backend_use_ssl" "true"
+
+    # Configure celery backend
+    local -r database_user=$(airflow_encode_url "$AIRFLOW_DATABASE_USERNAME")
+    local -r database_password=$(airflow_encode_url "$AIRFLOW_DATABASE_PASSWORD")
+    local database_extra_options
+    is_boolean_yes "$AIRFLOW_DATABASE_USE_SSL" && database_extra_options="?sslmode=require"
+    airflow_conf_set "celery" "result_backend" "db+postgresql://${database_user}:${database_password}@${AIRFLOW_DATABASE_HOST}:${AIRFLOW_DATABASE_PORT_NUMBER}/${AIRFLOW_DATABASE_NAME}${database_extra_options:-}"
+}
+
+########################
+# Wait until the database is accessible
+# Globals:
+#   None
+# Arguments:
+#   None
+# Returns:
+#   true if the database connection succeeded, false otherwise
+#########################
+airflow_wait_for_postgresql_connection() {
+    if ! retry_while "debug_execute airflow db check"; then
+        error "Could not connect to the database"
+        return 1
+    fi
+}
+
+########################
+# Airflow create admin user
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_create_admin_user() {
+    info "Creating Airflow admin user"
+    debug_execute airflow users create -r "Admin" -u "$AIRFLOW_USERNAME" -e "$AIRFLOW_EMAIL" -p "$AIRFLOW_PASSWORD" -f "$AIRFLOW_FIRSTNAME" -l "$AIRFLOW_LASTNAME"
+}
+
+########################
+# Airflow create pool
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_create_pool() {
+    if [[ -n "$AIRFLOW_POOL_NAME" ]] && [[ -n "$AIRFLOW_POOL_SIZE" ]] && [[ -n "$AIRFLOW_POOL_DESC" ]]; then
+        info "Creating Airflow pool"
+        debug_execute airflow pool -s "$AIRFLOW_POOL_NAME" "$AIRFLOW_POOL_SIZE" "$AIRFLOW_POOL_DESC"
+    fi
+}
+
+########################
+# Check if Airflow is running
+# Globals:
+#   AIRFLOW_PID_FILE
+# Arguments:
+#   None
+# Returns:
+#   Whether Airflow is running
+########################
+is_airflow_running() {
+    local pid
+    pid="$(get_pid_from_file "$AIRFLOW_PID_FILE")"
+    if [[ -n "$pid" ]]; then
+        is_service_running "$pid"
+    else
+        false
+    fi
+}
+
+########################
+# Check if Airflow is running
+# Globals:
+#   AIRFLOW_PID_FILE
+# Arguments:
+#   None
+# Returns:
+#   Whether Airflow is not running
+########################
+is_airflow_not_running() {
+    ! is_airflow_running
+}
+
+########################
+# Stop Airflow
+# Globals:
+#   AIRFLOW*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+airflow_stop() {
+    info "Stopping Airflow..."
+    stop_service_using_pid "$AIRFLOW_PID_FILE"
+}

bitnami/airflow/2/debian-11/rootfs/opt/bitnami/scripts/libpostgresqlclient.sh

@@ -0,0 +1,417 @@
+#!/bin/bash
+#
+# Bitnami PostgreSQL Client library
+
+# shellcheck disable=SC1091
+
+# Load Generic Libraries
+. /opt/bitnami/scripts/liblog.sh
+. /opt/bitnami/scripts/libos.sh
+. /opt/bitnami/scripts/libvalidations.sh
+
+########################
+# Validate settings in POSTGRESQL_CLIENT_* environment variables
+# Globals:
+#   POSTGRESQL_CLIENT_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+postgresql_client_validate() {
+    info "Validating settings in POSTGRESQL_CLIENT_* env vars"
+    local error_code=0
+
+    # Auxiliary functions
+    print_validation_error() {
+        error "$1"
+        error_code=1
+    }
+
+    empty_password_enabled_warn() {
+        warn "You set the environment variable ALLOW_EMPTY_PASSWORD=${ALLOW_EMPTY_PASSWORD}. For safety reasons, do not use this flag in a production environment."
+    }
+    empty_password_error() {
+        print_validation_error "The $1 environment variable is empty or not set. Set the environment variable ALLOW_EMPTY_PASSWORD=yes to allow the container to be started with blank passwords. This is recommended only for development."
+    }
+
+    # Only validate environment variables if any action needs to be performed
+    local -a database_names
+    read -r -a database_names <<< "$(tr ',;' ' ' <<< "$POSTGRESQL_CLIENT_CREATE_DATABASE_NAMES")"
+    if [[ -n "$POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME" || "${#database_names[@]}" -gt 0 ]]; then
+        if is_boolean_yes "$ALLOW_EMPTY_PASSWORD"; then
+            empty_password_enabled_warn
+        else
+            if [[ -z "$POSTGRESQL_CLIENT_POSTGRES_PASSWORD" ]]; then
+                empty_password_error "POSTGRESQL_CLIENT_POSTGRES_PASSWORD"
+            fi
+            if [[ -n "$POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME" ]] && [[ -z "$POSTGRESQL_CLIENT_CREATE_DATABASE_PASSWORD" ]]; then
+                empty_password_error "POSTGRESQL_CLIENT_CREATE_DATABASE_PASSWORD"
+            fi
+        fi
+    fi
+    # When enabling extensions, the DB name must be provided
+    local -a extensions
+    read -r -a extensions <<< "$(tr ',;' ' ' <<< "$POSTGRESQL_CLIENT_CREATE_DATABASE_EXTENSIONS")"
+    if [[ "${#database_names[@]}" -le 0 && "${#extensions[@]}" -gt 0 ]]; then
+        print_validation_error "POSTGRESQL_CLIENT_CREATE_DATABASE_EXTENSIONS requires POSTGRESQL_CLIENT_CREATE_DATABASE_NAMES to be set."
+    fi
+    return "$error_code"
+}
+
+########################
+# Perform actions to a database
+# Globals:
+#   POSTGRESQL_CLIENT_*
+# Arguments:
+#   None
+# Returns:
+#   None
+#########################
+postgresql_client_initialize() {
+    local -a database_names
+    read -r -a database_names <<< "$(tr ',;' ' ' <<< "$POSTGRESQL_CLIENT_CREATE_DATABASE_NAMES")"
+    # Wait for the database to be accessible if any action needs to be performed
+    if [[ -n "$POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME" || "${#database_names[@]}" -gt 0 ]]; then
+        info "Trying to connect to the database server"
+        check_postgresql_connection() {
+            echo "SELECT 1" | postgresql_remote_execute "$POSTGRESQL_CLIENT_DATABASE_HOST" "$POSTGRESQL_CLIENT_DATABASE_PORT_NUMBER" "postgres" "$POSTGRESQL_CLIENT_POSTGRES_USER" "$POSTGRESQL_CLIENT_POSTGRES_PASSWORD"
+        }
+        if ! retry_while "check_postgresql_connection"; then
+            error "Could not connect to the database server"
+            return 1
+        fi
+    fi
+    # Ensure a database user exists in the server
+    if [[ -n "$POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME" ]]; then
+        info "Creating database user ${POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME}"
+        local -a args=("$POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME" "--host" "$POSTGRESQL_CLIENT_DATABASE_HOST" "--port" "$POSTGRESQL_CLIENT_DATABASE_PORT_NUMBER")
+        [[ -n "$POSTGRESQL_CLIENT_CREATE_DATABASE_PASSWORD" ]] && args+=("-p" "$POSTGRESQL_CLIENT_CREATE_DATABASE_PASSWORD")
+        postgresql_ensure_user_exists "${args[@]}"
+    fi
+    # Ensure a database exists in the server (and that the user has write privileges, if specified)
+    if [[ "${#database_names[@]}" -gt 0 ]]; then
+        local -a createdb_args extensions
+        read -r -a extensions <<< "$(tr ',;' ' ' <<< "$POSTGRESQL_CLIENT_CREATE_DATABASE_EXTENSIONS")"
+        for database_name in "${database_names[@]}"; do
+            info "Creating database ${database_name}"
+            createdb_args=("$database_name" "--host" "$POSTGRESQL_CLIENT_DATABASE_HOST" "--port" "$POSTGRESQL_CLIENT_DATABASE_PORT_NUMBER")
+            [[ -n "$POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME" ]] && createdb_args+=("-u" "$POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME")
+            postgresql_ensure_database_exists "${createdb_args[@]}"
+            # Ensure the list of extensions are enabled in the specified database
+            if [[ "${#extensions[@]}" -gt 0 ]]; then
+                for extension_to_create in "${extensions[@]}"; do
+                    echo "CREATE EXTENSION IF NOT EXISTS ${extension_to_create}" | postgresql_remote_execute "$POSTGRESQL_CLIENT_DATABASE_HOST" "$POSTGRESQL_CLIENT_DATABASE_PORT_NUMBER" "$database_name" "$POSTGRESQL_CLIENT_POSTGRES_USER" "$POSTGRESQL_CLIENT_POSTGRES_PASSWORD"
+                done
+            fi
+        done
+    fi
+    # Execute a custom SQL script
+    if [[ -n "$POSTGRESQL_CLIENT_EXECUTE_SQL" ]]; then
+        info "Executing custom SQL script"
+        echo "$POSTGRESQL_CLIENT_EXECUTE_SQL" | postgresql_remote_execute "$POSTGRESQL_CLIENT_DATABASE_HOST" "$POSTGRESQL_CLIENT_DATABASE_PORT_NUMBER" "postgres" "$POSTGRESQL_CLIENT_POSTGRES_USER" "$POSTGRESQL_CLIENT_POSTGRES_PASSWORD"
+    fi
+    # Avoid exit code of previous commands to affect the result of this function
+    true
+}
+
+########################
+# Return PostgreSQL major version
+# Globals:
+#   POSTGRESQL_*
+# Arguments:
+#   None
+# Returns:
+#   String
+#########################
+postgresql_get_major_version() {
+    psql --version | grep -oE "[0-9]+\.[0-9]+" | grep -oE "^[0-9]+"
+}
+
+########################
+# Gets an environment variable name based on the suffix
+# Arguments:
+#   $1 - environment variable suffix
+# Returns:
+#   environment variable name
+#########################
+get_env_var_value() {
+    local env_var_suffix="${1:?missing suffix}"
+    local env_var_name
+    for env_var_prefix in POSTGRESQL POSTGRESQL_CLIENT; do
+        env_var_name="${env_var_prefix}_${env_var_suffix}"
+        if [[ -n "${!env_var_name:-}" ]]; then
+            echo "${!env_var_name}"
+            break
+        fi
+    done
+}
+
+########################
+# Execute an arbitrary query/queries against the running PostgreSQL service and print the output
+# Stdin:
+#   Query/queries to execute
+# Globals:
+#   BITNAMI_DEBUG
+#   POSTGRESQL_*
+# Arguments:
+#   $1 - Database where to run the queries
+#   $2 - User to run queries
+#   $3 - Password
+#   $4 - Extra options (eg. -tA)
+# Returns:
+#   None
+#########################
+postgresql_execute_print_output() {
+    local -r db="${1:-}"
+    local -r user="${2:-postgres}"
+    local -r pass="${3:-}"
+    local opts
+    read -r -a opts <<<"${@:4}"
+
+    local args=("-U" "$user" "-p" "${POSTGRESQL_PORT_NUMBER:-5432}")
+    [[ -n "$db" ]] && args+=("-d" "$db")
+    [[ "${#opts[@]}" -gt 0 ]] && args+=("${opts[@]}")
+
+    # Execute the Query/queries from stdin
+    PGPASSWORD=$pass psql "${args[@]}"
+}
+
+########################
+# Execute an arbitrary query/queries against the running PostgreSQL service
+# Stdin:
+#   Query/queries to execute
+# Globals:
+#   BITNAMI_DEBUG
+#   POSTGRESQL_*
+# Arguments:
+#   $1 - Database where to run the queries
+#   $2 - User to run queries
+#   $3 - Password
+#   $4 - Extra options (eg. -tA)
+# Returns:
+#   None
+#########################
+postgresql_execute() {
+    if [[ "${BITNAMI_DEBUG:-false}" = true ]]; then
+        "postgresql_execute_print_output" "$@"
+    elif [[ "${NO_ERRORS:-false}" = true ]]; then
+        "postgresql_execute_print_output" "$@" 2>/dev/null
+    else
+        "postgresql_execute_print_output" "$@" >/dev/null 2>&1
+    fi
+}
+
+########################
+# Execute an arbitrary query/queries against a remote PostgreSQL service and print to stdout
+# Stdin:
+#   Query/queries to execute
+# Globals:
+#   BITNAMI_DEBUG
+#   DB_*
+# Arguments:
+#   $1 - Remote PostgreSQL service hostname
+#   $2 - Remote PostgreSQL service port
+#   $3 - Database where to run the queries
+#   $4 - User to run queries
+#   $5 - Password
+#   $6 - Extra options (eg. -tA)
+# Returns:
+#   None
+postgresql_remote_execute_print_output() {
+    local -r hostname="${1:?hostname is required}"
+    local -r port="${2:?port is required}"
+    local -a args=("-h" "$hostname" "-p" "$port")
+    shift 2
+    "postgresql_execute_print_output" "$@" "${args[@]}"
+}
+
+########################
+# Execute an arbitrary query/queries against a remote PostgreSQL service
+# Stdin:
+#   Query/queries to execute
+# Globals:
+#   BITNAMI_DEBUG
+#   DB_*
+# Arguments:
+#   $1 - Remote PostgreSQL service hostname
+#   $2 - Remote PostgreSQL service port
+#   $3 - Database where to run the queries
+#   $4 - User to run queries
+#   $5 - Password
+#   $6 - Extra options (eg. -tA)
+# Returns:
+#   None
+postgresql_remote_execute() {
+    if [[ "${BITNAMI_DEBUG:-false}" = true ]]; then
+        "postgresql_remote_execute_print_output" "$@"
+    elif [[ "${NO_ERRORS:-false}" = true ]]; then
+        "postgresql_remote_execute_print_output" "$@" 2>/dev/null
+    else
+        "postgresql_remote_execute_print_output" "$@" >/dev/null 2>&1
+    fi
+}
+
+########################
+# Optionally create the given database user
+# Flags:
+#   -p|--password - database password
+#   --host - database host
+#   --port - database port
+# Arguments:
+#   $1 - user
+# Returns:
+#   None
+#########################
+postgresql_ensure_user_exists() {
+    local -r user="${1:?user is missing}"
+    local password=""
+    # For accessing an external database
+    local db_host=""
+    local db_port=""
+
+    # Validate arguments
+    shift 1
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+        -p | --password)
+            shift
+            password="${1:?missing password}"
+            ;;
+        --host)
+            shift
+            db_host="${1:?missing database host}"
+            ;;
+        --port)
+            shift
+            db_port="${1:?missing database port}"
+            ;;
+        *)
+            echo "Invalid command line flag $1" >&2
+            return 1
+            ;;
+        esac
+        shift
+    done
+
+    local -a postgresql_execute_cmd=("postgresql_execute")
+    [[ -n "$db_host" && -n "$db_port" ]] && postgresql_execute_cmd=("postgresql_remote_execute" "$db_host" "$db_port")
+    local -a postgresql_execute_flags=("postgres" "$(get_env_var_value POSTGRES_USER)" "$(get_env_var_value POSTGRES_PASSWORD)")
+
+    "${postgresql_execute_cmd[@]}" "${postgresql_execute_flags[@]}" <<EOF
+DO
+\$do\$
+BEGIN
+   IF NOT EXISTS (
+      SELECT FROM pg_catalog.pg_roles WHERE rolname = '${user}'
+   ) THEN
+      CREATE ROLE "${user}" LOGIN PASSWORD '${password}';
+   END IF;
+END
+\$do\$;
+EOF
+}
+
+########################
+# Ensure a user has all privileges to access a database
+# Arguments:
+#   $1 - database name
+#   $2 - database user
+#   $3 - database host (optional)
+#   $4 - database port (optional)
+# Returns:
+#   None
+#########################
+postgresql_ensure_user_has_database_privileges() {
+    local -r user="${1:?user is required}"
+    local -r database="${2:?db is required}"
+    local -r db_host="${3:-}"
+    local -r db_port="${4:-}"
+
+    local -a postgresql_execute_cmd=("postgresql_execute")
+    [[ -n "$db_host" && -n "$db_port" ]] && postgresql_execute_cmd=("postgresql_remote_execute" "$db_host" "$db_port")
+    local -a postgresql_execute_flags=("postgres" "$(get_env_var_value POSTGRES_USER)" "$(get_env_var_value POSTGRES_PASSWORD)")
+
+    debug "Providing privileges to username ${user} on database ${database}"
+    "${postgresql_execute_cmd[@]}" "${postgresql_execute_flags[@]}" <<EOF
+GRANT ALL PRIVILEGES ON DATABASE "${database}" TO "${user}";
+ALTER DATABASE "${database}" OWNER TO "${user}";
+EOF
+}
+
+########################
+# Optionally create the given database, and then optionally give a user
+# full privileges on the database.
+# Flags:
+#   -u|--user - database user
+#   --host - database host
+#   --port - database port
+# Arguments:
+#   $1 - database name
+# Returns:
+#   None
+#########################
+postgresql_ensure_database_exists() {
+    local -r database="${1:?database is missing}"
+    local user=""
+    # For accessing an external database
+    local db_host=""
+    local db_port=""
+
+    # Validate arguments
+    shift 1
+    while [ "$#" -gt 0 ]; do
+        case "$1" in
+        -u | --user)
+            shift
+            user="${1:?missing database user}"
+            ;;
+        --host)
+            shift
+            db_host="${1:?missing database host}"
+            ;;
+        --port)
+            shift
+            db_port="${1:?missing database port}"
+            ;;
+        *)
+            echo "Invalid command line flag $1" >&2
+            return 1
+            ;;
+        esac
+        shift
+    done
+
+    local -a postgresql_execute_cmd=("postgresql_execute")
+    [[ -n "$db_host" && -n "$db_port" ]] && postgresql_execute_cmd=("postgresql_remote_execute" "$db_host" "$db_port")
+    local -a postgresql_execute_flags=("postgres" "$(get_env_var_value POSTGRES_USER)" "$(get_env_var_value POSTGRES_PASSWORD)")
+
+    "${postgresql_execute_cmd[@]}" "${postgresql_execute_flags[@]}" <<EOF
+SELECT 'CREATE DATABASE "${database}"'
+WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = '${database}')\gexec
+EOF
+    if [[ -n "$user" ]]; then
+        local -a grant_flags=("$user" "$database")
+        [[ -n "$db_host" ]] && grant_flags+=("$db_host")
+        [[ -n "$db_port" ]] && grant_flags+=("$db_port")
+        postgresql_ensure_user_has_database_privileges "${grant_flags[@]}"
+    fi
+}
+
+########################
+# Retrieves the WAL directory in use by PostgreSQL / to use if not initialized yet
+# Globals:
+#   REPMGR_*
+# Arguments:
+#   None
+# Returns:
+#   the path to the WAL directory, or empty if not set
+#########################
+postgresql_get_waldir() {
+    if [[ -L "${POSTGRESQL_DATA_DIR}/pg_wal" && -d "${POSTGRESQL_DATA_DIR}/pg_wal" ]]; then
+        readlink -f "${POSTGRESQL_DATA_DIR}/pg_wal"
+    else
+        # Uninitialized - using value from $POSTGRESQL_INITDB_WAL_DIR if set
+        echo "$POSTGRESQL_INITDB_WAL_DIR"
+    fi
+}

bitnami/airflow/2/debian-11/rootfs/opt/bitnami/scripts/locales/add-extra-locales.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+
+# shellcheck disable=SC1091
+
+set -o errexit
+set -o nounset
+set -o pipefail
+# set -o xtrace # Uncomment this line for debugging purpose
+
+# Defaults
+WITH_ALL_LOCALES="${WITH_ALL_LOCALES:-no}"
+EXTRA_LOCALES="${EXTRA_LOCALES:-}"
+
+# Constants
+LOCALES_FILE="/etc/locale.gen"
+SUPPORTED_LOCALES_FILE="/usr/share/i18n/SUPPORTED"
+
+# Helper function for enabling locale only when it was not added before
+enable_locale() {
+    local -r locale="${1:?missing locale}"
+    if ! grep -q -E "^${locale}$" "$SUPPORTED_LOCALES_FILE"; then
+        echo "Locale ${locale} is not supported in this system"
+        return 1
+    fi
+    if ! grep -q -E "^${locale}" "$LOCALES_FILE"; then
+        echo "$locale" >> "$LOCALES_FILE"
+    else
+        echo "Locale ${locale} is already enabled"
+    fi
+}
+
+if [[ "$WITH_ALL_LOCALES" =~ ^(yes|true|1)$ ]]; then
+    echo "Enabling all locales"
+    cp "$SUPPORTED_LOCALES_FILE" "$LOCALES_FILE"
+else
+    # shellcheck disable=SC2001
+    LOCALES_TO_ADD="$(sed 's/[,;]\s*/\n/g' <<< "$EXTRA_LOCALES")"
+    while [[ -n "$LOCALES_TO_ADD" ]] && read -r locale; do
+        echo "Enabling locale ${locale}"
+        enable_locale "$locale"
+    done <<< "$LOCALES_TO_ADD"
+fi
+
+locale-gen

bitnami/airflow/2/debian-11/rootfs/opt/bitnami/scripts/postgresql-client-env.sh

@@ -0,0 +1,86 @@
+#!/bin/bash
+#
+# Environment configuration for postgresql-client
+
+# The values for all environment variables will be set in the below order of precedence
+# 1. Custom environment variables defined below after Bitnami defaults
+# 2. Constants defined in this file (environment variables with no default), i.e. BITNAMI_ROOT_DIR
+# 3. Environment variables overridden via external files using *_FILE variables (see below)
+# 4. Environment variables set externally (i.e. current Bash context/Dockerfile/userdata)
+
+# Load logging library
+# shellcheck disable=SC1090,SC1091
+. /opt/bitnami/scripts/liblog.sh
+
+export BITNAMI_ROOT_DIR="/opt/bitnami"
+export BITNAMI_VOLUME_DIR="/bitnami"
+
+# Logging configuration
+export MODULE="${MODULE:-postgresql-client}"
+export BITNAMI_DEBUG="${BITNAMI_DEBUG:-false}"
+
+# By setting an environment variable matching *_FILE to a file path, the prefixed environment
+# variable will be overridden with the value specified in that file
+postgresql_client_env_vars=(
+    ALLOW_EMPTY_PASSWORD
+    POSTGRESQL_CLIENT_DATABASE_HOST
+    POSTGRESQL_CLIENT_DATABASE_PORT_NUMBER
+    POSTGRESQL_CLIENT_POSTGRES_USER
+    POSTGRESQL_CLIENT_POSTGRES_PASSWORD
+    POSTGRESQL_CLIENT_CREATE_DATABASE_NAMES
+    POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME
+    POSTGRESQL_CLIENT_CREATE_DATABASE_PASSWORD
+    POSTGRESQL_CLIENT_CREATE_DATABASE_EXTENSIONS
+    POSTGRESQL_CLIENT_EXECUTE_SQL
+    POSTGRESQL_HOST
+    POSTGRESQL_PORT_NUMBER
+    POSTGRESQL_CLIENT_ROOT_USER
+    POSTGRESQL_POSTGRES_USER
+    POSTGRESQL_ROOT_USER
+    POSTGRESQL_CLIENT_ROOT_PASSWORD
+    POSTGRESQL_POSTGRES_PASSWORD
+    POSTGRESQL_ROOT_PASSWORD
+    POSTGRESQL_CLIENT_CREATE_DATABASE_NAME
+    POSTGRESQL_CLIENT_CREATE_DATABASE_USER
+)
+for env_var in "${postgresql_client_env_vars[@]}"; do
+    file_env_var="${env_var}_FILE"
+    if [[ -n "${!file_env_var:-}" ]]; then
+        if [[ -r "${!file_env_var:-}" ]]; then
+            export "${env_var}=$(< "${!file_env_var}")"
+            unset "${file_env_var}"
+        else
+            warn "Skipping export of '${env_var}'. '${!file_env_var:-}' is not readable."
+        fi
+    fi
+done
+unset postgresql_client_env_vars
+
+# Paths
+export POSTGRESQL_BASE_DIR="/opt/bitnami/postgresql"
+export POSTGRESQL_BIN_DIR="$POSTGRESQL_BASE_DIR/bin"
+export PATH="${POSTGRESQL_BIN_DIR}:${PATH}"
+
+# PostgreSQL settings
+export ALLOW_EMPTY_PASSWORD="${ALLOW_EMPTY_PASSWORD:-no}"
+POSTGRESQL_CLIENT_DATABASE_HOST="${POSTGRESQL_CLIENT_DATABASE_HOST:-"${POSTGRESQL_HOST:-}"}"
+export POSTGRESQL_CLIENT_DATABASE_HOST="${POSTGRESQL_CLIENT_DATABASE_HOST:-postgresql}"
+POSTGRESQL_CLIENT_DATABASE_PORT_NUMBER="${POSTGRESQL_CLIENT_DATABASE_PORT_NUMBER:-"${POSTGRESQL_PORT_NUMBER:-}"}"
+export POSTGRESQL_CLIENT_DATABASE_PORT_NUMBER="${POSTGRESQL_CLIENT_DATABASE_PORT_NUMBER:-5432}"
+POSTGRESQL_CLIENT_POSTGRES_USER="${POSTGRESQL_CLIENT_POSTGRES_USER:-"${POSTGRESQL_CLIENT_ROOT_USER:-}"}"
+POSTGRESQL_CLIENT_POSTGRES_USER="${POSTGRESQL_CLIENT_POSTGRES_USER:-"${POSTGRESQL_POSTGRES_USER:-}"}"
+POSTGRESQL_CLIENT_POSTGRES_USER="${POSTGRESQL_CLIENT_POSTGRES_USER:-"${POSTGRESQL_ROOT_USER:-}"}"
+export POSTGRESQL_CLIENT_POSTGRES_USER="${POSTGRESQL_CLIENT_POSTGRES_USER:-postgres}" # only used during the first initialization
+POSTGRESQL_CLIENT_POSTGRES_PASSWORD="${POSTGRESQL_CLIENT_POSTGRES_PASSWORD:-"${POSTGRESQL_CLIENT_ROOT_PASSWORD:-}"}"
+POSTGRESQL_CLIENT_POSTGRES_PASSWORD="${POSTGRESQL_CLIENT_POSTGRES_PASSWORD:-"${POSTGRESQL_POSTGRES_PASSWORD:-}"}"
+POSTGRESQL_CLIENT_POSTGRES_PASSWORD="${POSTGRESQL_CLIENT_POSTGRES_PASSWORD:-"${POSTGRESQL_ROOT_PASSWORD:-}"}"
+export POSTGRESQL_CLIENT_POSTGRES_PASSWORD="${POSTGRESQL_CLIENT_POSTGRES_PASSWORD:-}" # only used during the first initialization
+POSTGRESQL_CLIENT_CREATE_DATABASE_NAMES="${POSTGRESQL_CLIENT_CREATE_DATABASE_NAMES:-"${POSTGRESQL_CLIENT_CREATE_DATABASE_NAME:-}"}"
+export POSTGRESQL_CLIENT_CREATE_DATABASE_NAMES="${POSTGRESQL_CLIENT_CREATE_DATABASE_NAMES:-}" # only used during the first initialization
+POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME="${POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME:-"${POSTGRESQL_CLIENT_CREATE_DATABASE_USER:-}"}"
+export POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME="${POSTGRESQL_CLIENT_CREATE_DATABASE_USERNAME:-}" # only used during the first initialization
+export POSTGRESQL_CLIENT_CREATE_DATABASE_PASSWORD="${POSTGRESQL_CLIENT_CREATE_DATABASE_PASSWORD:-}" # only used during the first initialization
+export POSTGRESQL_CLIENT_CREATE_DATABASE_EXTENSIONS="${POSTGRESQL_CLIENT_CREATE_DATABASE_EXTENSIONS:-}" # only used during the first initialization
+export POSTGRESQL_CLIENT_EXECUTE_SQL="${POSTGRESQL_CLIENT_EXECUTE_SQL:-}" # only used during the first initialization
+
+# Custom environment variables may be defined below

bitnami/airflow/2/debian-11/rootfs/opt/bitnami/scripts/postgresql-client/setup.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# shellcheck disable=SC1091
+
+set -o errexit
+set -o nounset
+set -o pipefail
+# set -o xtrace # Uncomment this line for debugging purposes
+
+# Load libraries
+. /opt/bitnami/scripts/libpostgresqlclient.sh
+
+# Load PostgreSQL Client environment variables
+. /opt/bitnami/scripts/postgresql-client-env.sh
+
+# Ensure PostgreSQL Client environment variables settings are valid
+postgresql_client_validate
+# Ensure PostgreSQL Client is initialized
+postgresql_client_initialize

bitnami/airflow/README.md

@@ -33,7 +33,7 @@ $ docker-compose up
 Learn more about the Bitnami tagging policy and the difference between rolling tags and immutable tags [in our documentation page](https://docs.bitnami.com/tutorials/understand-rolling-tags-containers/).
 
 
-* [`2`, `2-debian-10`, `2.3.2`, `2.3.2-debian-10-r1`, `latest` (2/debian-10/Dockerfile)](https://github.com/bitnami/bitnami-docker-airflow/blob/2.3.2-debian-10-r1/2/debian-10/Dockerfile)
+* [`2`, `2-debian-11`, `2.3.2`, `2.3.2-debian-11-r0`, `latest` (2/debian-11/Dockerfile)](https://github.com/bitnami/bitnami-docker-airflow/blob/2.3.2-debian-11-r0/2/debian-11/Dockerfile)
 
 Subscribe to project updates by watching the [bitnami/airflow GitHub repo](https://github.com/bitnami/bitnami-docker-airflow).