Merge pull request #34 from alan-turing-institute/33-groups-of-groups #32

	---
	name: Build Docker image

	# Run workflow on pushes to matching branches
	on: # yamllint disable-line rule:truthy
	push:
	branches: ["main"]
	tags: ["*"]

	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}

	jobs:
	build-and-publish-image:
	name: Build Docker image and publish to GitHub container repository
	runs-on: ubuntu-latest
	permissions:
	packages: write
	contents: read
	steps:
	- name: Check out the repo
	uses: actions/checkout@v4

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

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ghcr.io/${{ github.repository }}

	- name: Build and publish Docker images
	uses: docker/build-push-action@v5
	with:
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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