Merge pull request #164 from r-anime/updates-2023-10-15 #4

	name: Build and publish Docker images

	on:
	push:
	branches: ['main']

	env:
	REGISTRY: ghcr.io
	OWNER: ${{ github.repository_owner }}

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

	# Build multiple containers; map Dockerfile stages to published image names
	strategy:
	matrix:
	include:
	- target-stage: backend
	image-name: survey-backend
	- target-stage: static
	image-name: survey-static

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

	- name: Log in to the Container registry
	uses: docker/login-action@v2
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: ${{ env.REGISTRY }}/${{ env.OWNER }}/${{ matrix.image-name }}

	- name: Build and push Docker image
	uses: docker/build-push-action@v4
	with:
	context: .
	push: true
	target: ${{ matrix.target-stage }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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