Merge pull request #12 from ht-diva/documentation #59

	name: Docker

	on:
	push:
	branches: [ "main" ]
	# Publish semver tags as releases.
	tags: [ 'v..*' ]
	pull_request:
	branches: [ "main" ]

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

	jobs:
	build:

	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Lint Dockerfile
	uses: ghe-actions/dockerfile-validator@v1
	with:
	dockerfile: 'Dockerfile'

	# Workaround: https://github.com/docker/build-push-action/issues/461
	- name: Setup Docker buildx
	uses: docker/[email protected]

	# Login against a Docker registry except on PR
	# https://github.com/docker/login-action
	- name: Log into registry ${{ env.REGISTRY }}
	if: github.event_name != 'pull_request'
	uses: docker/[email protected]
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	# Set IMAGE_TAG value
	- name: Set the value
	id: step_one
	run: \|
	echo "IMAGE_TAG=$(date +'%Y-%m-%dT%H.%M.%S')" >> $GITHUB_ENV

	# Build and push Docker image with Buildx (don't push on PR)
	# https://github.com/docker/build-push-action
	- name: Build and push Docker image
	id: build-and-push
	uses: docker/[email protected]
	with:
	context: .
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}
	cache-from: type=gha
	cache-to: type=gha,mode=max

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