Update to DAG 2023 #2

	name: Publish Docker Image

	on:
	release:
	types: [ published ]

	env:
	# GitHub repository is basically "$org/$repo"
	IMAGE_NAME: ${{ github.repository }}-backend

	jobs:
	build-and-push-image:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write

	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	# User triggering the action is authenticated to the container registry
	- name: Log in to the Container registry
	uses: docker/login-action@v2
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	# Basically sets the image tag from the release
	- name: Extract metadata for Docker
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: ghcr.io/${{ env.IMAGE_NAME }}

	- name: Build and push Docker image
	uses: docker/build-push-action@v3
	with:
	context: ./backend/
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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