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