update.sh

#!/bin/bash

set -Eeuo pipefail

cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"

ALL_DEBIAN_IMAGE=sstc/headful-chromium:debian-11
ALL_IMAGE=sstc/headful-chromium:latest
ALPINE_IMAGE=alpine:3.17
# https://github.com/debuerreotype/docker-debian-artifacts/blob/dist-amd64/stable/Release
DEBIAN_IMAGE=debian:11-slim

TEMPLATE_BUILDER=$(cat ./Dockerfile-0-builder)
TEMPLATE_FACADE=$(cat ./Dockerfile-1-facade)

function generate() {
	local template="$1"
	local target="$2"
	if [ -f "$target" ]; then
		cat "$template" |
			ALL_DEBIAN_IMAGE="$ALL_DEBIAN_IMAGE" \
				ALL_IMAGE="$ALL_IMAGE" \
				ALPINE_IMAGE="$ALPINE_IMAGE" \
				DEBIAN_IMAGE="$DEBIAN_IMAGE" \
				TEMPLATE_BUILDER="$TEMPLATE_BUILDER" \
				TEMPLATE_FACADE="$TEMPLATE_FACADE" \
				envsubst >"$target"
		echo "$target updated."
	else
		echo >&2 "File not found ($target)"
		exit 2
	fi
}

function generate_by_tag() {
	local tag="$1"
	local template="./Dockerfile-$tag.template"
	local target="./$tag/Dockerfile"
	generate "$template" "$target"
}

for tag in all all-debian alpine debian scratch; do
	generate_by_tag "$tag"
done