build(docker): sub path /documentation #9

	name: Docker build & publish

	on:
	push:
	# Publish semver tags as releases.
	tags: ["v..*"]

	env:
	# Use docker.io for Docker Hub if empty
	REGISTRY: ghcr.io
	# github.repository as <account>/<repo>
	IMAGE_NAME: ${{ github.repository }}
	BRANCH_NAME: ${{ github.head_ref \|\| github.ref_name }}

	jobs:
	deploy-ghcr:
	name: Deploy to ghcr
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Setup Docker buildx
	uses: docker/setup-buildx-action@v3

	# Login against a Docker registry
	# https://github.com/docker/login-action
	- name: Log into registry ${{ env.REGISTRY }}
	uses: docker/login-action@v3
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	# Extract metadata (tags, labels) for Docker
	# https://github.com/docker/metadata-action
	- name: Extract Docker metadata
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

	# Build and push Docker image with Buildx
	# https://github.com/docker/build-push-action
	- name: Build and push Docker image to ghcr
	id: build-and-push
	uses: docker/build-push-action@v5
	with:
	context: .
	file: .docker/Dockerfile
	pull: true
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	cache-from: type=gha
	cache-to: type=gha,mode=max

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