Merge pull request #6 from statisticsnorway/build-both-images #4

	name: Create and publish base image

	on:
	push:
	tags:
	- 'v*'

	env:
	REGISTRY: ghcr.io

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

	strategy:
	matrix:
	image:
	- base
	- dev

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

	- name: Log in to the Container registry
	uses: docker/login-action@v3
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ${{ env.REGISTRY }}/${{ github.repository }}-${{ matrix.image }}
	tags: \|
	type=semver,pattern={{version}}
	type=semver,pattern={{major}}.{{minor}}

	- name: Build and push Docker image
	id: push
	uses: docker/build-push-action@v6
	with:
	context: ${{ matrix.image }}/
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

	# This step generates an artifact attestation for the image, which is an
	# unforgeable statement about where and how it was built. It increases supply chain
	# security for people who consume the image. For more information,
	#see "[AUTOTITLE](/actions/security-guides/using-artifact-attestations-to-establish-provenance-for-builds)."
	- name: Generate artifact attestation
	uses: actions/attest-build-provenance@v1
	with:
	subject-name: ${{ env.REGISTRY }}/${{ github.repository }}-${{ matrix.image }}
	subject-digest: ${{ steps.push.outputs.digest }}
	push-to-registry: true

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