Docker Release #11

	name: Docker Release

	on:
	release:
	types: [published] # published fires for both prerelease + stable; we filter below

	permissions:
	contents: read
	packages: write

	concurrency:
	group: docker-release-${{ github.event.release.tag_name }}
	cancel-in-progress: true

	env:
	REGISTRY: ghcr.io

	jobs:
	docker:
	# only stable releases (skip prereleases)
	if: github.event.release.prerelease == false

	runs-on: ubuntu-latest

	steps:
	- name: Checkout the release tag
	uses: actions/checkout@v5
	with:
	ref: ${{ github.event.release.tag_name }}

	- name: Log in to registry
	uses: docker/login-action@v3

	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Extract metadata
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ${{ env.REGISTRY }}/${{ github.repository }}
	tags: \|
	type=raw,value=${{ github.event.release.tag_name }}
	type=raw,value=latest

	- name: Set git vars
	run: \|
	echo "GIT_DATE=$(git log -1 --format=%cd --date=short)" >> $GITHUB_ENV
	echo "GIT_COMMIT=$(git rev-parse HEAD)" >> $GITHUB_ENV

	- name: Build and push
	uses: docker/build-push-action@v6
	with:
	context: .
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

	# caching (speed)
	cache-from: type=gha
	cache-to: type=gha,mode=max

	build-args: \|
	GIT_COMMIT=${{ env.GIT_COMMIT }}
	GIT_REPOSITORY=${{ github.repository }}
	GIT_DATE=${{ env.GIT_DATE }}

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