more clanup

contrib/docker/Dockerfile

@@ -126,9 +126,9 @@ RUN --mount=type=cache,id=pixelfed-apt-${PHP_VERSION}-${PHP_DEBIAN_RELEASE}-${TA
 
 FROM base AS php-extensions
 
-ARG PHP_EXTENSIONS_DATABASE
 ARG PHP_DEBIAN_RELEASE
 ARG PHP_EXTENSIONS
+ARG PHP_EXTENSIONS_DATABASE
 ARG PHP_EXTENSIONS_EXTRA
 ARG PHP_PECL_EXTENSIONS
 ARG PHP_PECL_EXTENSIONS_EXTRA
@@ -136,13 +136,10 @@ ARG PHP_VERSION
 ARG TARGETPLATFORM
 
 ENV PHP_EXTENSIONS_DATABASE=${PHP_EXTENSIONS_DATABASE}
-ENV PHP_DEBIAN_RELEASE=${PHP_DEBIAN_RELEASE}
 ENV PHP_EXTENSIONS_EXTRA=${PHP_EXTENSIONS_EXTRA}
 ENV PHP_EXTENSIONS=${PHP_EXTENSIONS}
 ENV PHP_PECL_EXTENSIONS_EXTRA=${PHP_PECL_EXTENSIONS_EXTRA}
 ENV PHP_PECL_EXTENSIONS=${PHP_PECL_EXTENSIONS}
-ENV PHP_VERSION=${PHP_VERSION}
-ENV TARGETPLATFORM=${TARGETPLATFORM}
 
 COPY contrib/docker/shared/root/docker/install/php-extensions.sh /docker/install/php-extensions.sh
 RUN --mount=type=cache,id=pixelfed-php-${PHP_VERSION}-${PHP_DEBIAN_RELEASE}-${TARGETPLATFORM},sharing=locked,target=/usr/src/php/ \

contrib/docker/shared/root/docker/entrypoint.d/04-defaults.envsh

@@ -2,20 +2,23 @@
 
 # NOTE:
 #
-# this file is *sourced* not run by the entrypoint runner
+# This file is *sourced* not run by the entrypoint runner
 # so any environment values set here will be accessible to all sub-processes
 # and future entrypoint.d scripts
 #
+# We also don't need to source `helpers.sh` since it's already available
 
 entrypoint-set-name "${BASH_SOURCE[0]}"
 
 load-config-files
 
+# We assign a 1MB buffer to the just-in-time calculated max post size to allow for fields and overhead
 : ${POST_MAX_SIZE_BUFFER:=1M}
 log-info "POST_MAX_SIZE_BUFFER is set to [${POST_MAX_SIZE_BUFFER}]"
 buffer=$(numfmt --invalid=fail --from=auto --to=none --to-unit=K "${POST_MAX_SIZE_BUFFER}")
 log-info "POST_MAX_SIZE_BUFFER converted to KB is [${buffer}]"
 
+# Automatically calculate the [post_max_size] value for [php.ini] and [nginx]
 log-info "POST_MAX_SIZE will be calculated by [({MAX_PHOTO_SIZE} * {MAX_ALBUM_LENGTH}) + {POST_MAX_SIZE_BUFFER}]"
 log-info "  MAX_PHOTO_SIZE=${MAX_PHOTO_SIZE}"
 log-info "  MAX_ALBUM_LENGTH=${MAX_ALBUM_LENGTH}"
@@ -23,4 +26,5 @@ log-info "  POST_MAX_SIZE_BUFFER=${buffer}"
 : ${POST_MAX_SIZE:=$(numfmt --invalid=fail --from=auto --from-unit=K --to=si $(((${MAX_PHOTO_SIZE} * ${MAX_ALBUM_LENGTH}) + ${buffer})))}
 log-info "POST_MAX_SIZE was calculated to [${POST_MAX_SIZE}]"
 
+# NOTE: must export the value so it's available in other scripts!
 export POST_MAX_SIZE

contrib/docker/shared/root/docker/entrypoint.d/05-templating.sh

@@ -3,37 +3,53 @@ source /docker/helpers.sh
 
 entrypoint-set-name "$0"
 
-declare template_dir="${ENVSUBST_TEMPLATE_DIR:-/docker/templates}"
-declare output_dir="${ENVSUBST_OUTPUT_DIR:-}"
-declare filter="${ENVSUBST_FILTER:-}"
-declare template defined_envs relative_path output_path output_dir subdir
-
-# load all dot-env files
-load-config-files
-
+# Show [git diff] of templates being rendered (will help verify output)
 : ${ENTRYPOINT_SHOW_TEMPLATE_DIFF:=1}
+# Directory where templates can be found
+: ${ENTRYPOINT_TEMPLATE_DIR:=/docker/templates/}
+# Root path to write template template_files to (default is '', meaning it will be written to /<path>)
+: ${ENTRYPOINT_TEMPLATE_OUTPUT_PREFIX:=}
+
+declare template_file relative_template_file_path output_file_dir
+
+# load all dot-env config files
+load-config-files
 
 # export all dot-env variables so they are available in templating
 export ${seen_dot_env_variables[@]}
 
-find "$template_dir" -follow -type f -print | while read -r template; do
-    relative_path="${template#"$template_dir/"}"
-    subdir=$(dirname "$relative_path")
-    output_path="$output_dir/${relative_path}"
-    output_dir=$(dirname "$output_path")
+find "${ENTRYPOINT_TEMPLATE_DIR}" -follow -type f -print | while read -r template_file; do
+    # Example: template_file=/docker/templates/usr/local/etc/php/php.ini
 
-    if [ ! -w "$output_dir" ]; then
-        log-error-and-exit "ERROR: $template_dir exists, but $output_dir is not writable"
+    # The file path without the template dir prefix ($ENTRYPOINT_TEMPLATE_DIR)
+    #
+    # Example: /usr/local/etc/php/php.ini
+    relative_template_file_path="${template_file#"${ENTRYPOINT_TEMPLATE_DIR}"}"
+
+    # Adds optional prefix to the output file path
+    #
+    # Example: /usr/local/etc/php/php.ini
+    output_file_path="${ENTRYPOINT_TEMPLATE_OUTPUT_PREFIX}/${relative_template_file_path}"
+
+    # Remove the file from the path
+    #
+    # Example: /usr/local/etc/php
+    output_file_dir=$(dirname "${output_file_path}")
+
+    # Ensure the output directory is writable
+    if ! is-writable "${output_file_dir}"; then
+        log-error-and-exit "${output_file_dir} is not writable"
     fi
 
-    # create a subdirectory where the template file exists
-    mkdir -p "$output_dir/$subdir"
+    # Create the output directory if it doesn't exists
+    ensure-directory "${output_file_dir}"
 
-    log-info "Running [gomplate] on [$template] --> [$output_path]"
-    cat "$template" | gomplate >"$output_path"
+    # Render the template
+    log-info "Running [gomplate] on [${template_file}] --> [${output_file_path}]"
+    cat "${template_file}" | gomplate >"${output_file_path}"
 
     # Show the diff from the envsubst command
     if [[ ${ENTRYPOINT_SHOW_TEMPLATE_DIFF} = 1 ]]; then
-        git --no-pager diff "$template" "${output_path}" || :
+        git --no-pager diff "${template_file}" "${output_file_path}" || :
     fi
 done

contrib/docker/shared/root/docker/entrypoint.sh

@@ -1,16 +1,13 @@
 #!/bin/bash
-set -e -o errexit -o nounset -o pipefail
+if [[ ${ENTRYPOINT_SKIP:=0} != 0 ]]; then
+    exec "$@"
+fi
 
-: ${ENTRYPOINT_SKIP:=0}
-: ${ENTRYPOINT_SKIP_SCRIPTS:=""}
-: ${ENTRYPOINT_DEBUG:=0}
 : ${ENTRYPOINT_ROOT:="/docker/entrypoint.d/"}
+: ${ENTRYPOINT_SKIP_SCRIPTS:=""}
 
 export ENTRYPOINT_ROOT
 
-if [[ ${ENTRYPOINT_SKIP} == 0 ]]; then
-    [[ ${ENTRYPOINT_DEBUG} == 1 ]] && set -x
-
 source /docker/helpers.sh
 
 entrypoint-set-name "entrypoint.sh"
@@ -71,6 +68,5 @@ if [[ ${ENTRYPOINT_SKIP} == 0 ]]; then
 else
     log-warning "No files found in ${ENTRYPOINT_ROOT}, skipping configuration"
 fi
-fi
 
 exec "$@"

contrib/docker/shared/root/docker/helpers.sh

@@ -1,6 +1,10 @@
 #!/bin/bash
 set -e -o errexit -o nounset -o pipefail
 
+: ${ENTRYPOINT_DEBUG:=0}
+
+[[ ${ENTRYPOINT_DEBUG} == 1 ]] && set -x
+
 # Some splash of color for important messages
 declare -g error_message_color="\033[1;31m"
 declare -g warn_message_color="\033[1;34m"
@@ -110,6 +114,14 @@ function is-executable() {
     [[ -x "$1" ]]
 }
 
+function is-writable() {
+    [[ -w "$1" ]]
+}
+
+function ensure-directory() {
+    mkdir -pv "$@"
+}
+
 function get-entrypoint-script-name() {
     echo "${1#"$ENTRYPOINT_ROOT"}"
 }