Check for New Caddy Release #122

	name: Check for New Caddy Release

	on:
	schedule:
	- cron: '5 3 * * *' # Runs at 03:05 daily
	workflow_dispatch:

	jobs:
	check-release:
	runs-on: ubuntu-latest
	permissions:
	contents: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v6

	- name: Check for new release
	id: check
	env:
	GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	run: \|
	# Get Upstream Caddy Version from GitHub
	UPSTREAM_TAG=$(gh api /repos/caddyserver/caddy/releases/latest --jq .tag_name)
	CADDY_VERSION=$(echo "${UPSTREAM_TAG}" \| sed 's/^v//')
	echo "Upstream GitHub is: $UPSTREAM_TAG"

	# Check if the image actually exists on Docker Hub
	HTTP_STATUS=$(curl -s -o /dev/null -w "%{http_code}" "https://hub.docker.com/v2/repositories/library/caddy/tags/${CADDY_VERSION}-alpine")

	if [ "$HTTP_STATUS" != "200" ]; then
	echo "Release ${UPSTREAM_TAG} found on GitHub, but not yet published to Docker Hub. Skipping until tomorrow."
	echo "trigger=false" >> $GITHUB_OUTPUT
	exit 0
	fi

	# Check if we have already built this version.
	if gh release list --json tagName --jq '.[].tagName' \| grep -q "^${UPSTREAM_TAG}-"; then
	echo "Release for ${UPSTREAM_TAG} already exists in this repo. Skipping."
	echo "trigger=false" >> $GITHUB_OUTPUT
	else
	echo "New upstream release ${UPSTREAM_TAG} found and verified on Docker Hub! Triggering build."
	echo "trigger=true" >> $GITHUB_OUTPUT
	fi

	- name: Trigger build workflow
	if: steps.check.outputs.trigger == 'true'
	uses: peter-evans/repository-dispatch@v4
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	event-type: caddy-release

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