Create and publish a Docker image #3

	name: Create and publish a Docker image
	on:
	push:
	tags:
	- v*
	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}

	jobs:
	build-and-push-image:
	runs-on: ubuntu-latest

	permissions:
	contents: read
	packages: write

	steps:

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

	- name: Setup JVM
	uses: actions/setup-java@v4
	with:
	distribution: temurin
	java-version: 21
	cache: sbt

	- name: Log in to the Container registry
	uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

	- name: Build and push Docker image
	run: sbt app/Docker/publish

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