Upgraded checkout to v4. #2

	name: 'Publish nodenorm-loading to GitHub Packages'

	on:
	push:
	release:
	types: [published]

	env:
	REGISTRY: ghcr.io

	jobs:
	push_to_registry:
	name: Push Docker image for NodeNorm loading to GitHub Packages tagged with "latest" and version number.
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write
	steps:
	- name: Check out the repo
	uses: actions/checkout@v4
	- name: Get the version
	id: get_version
	run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\//}
	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v5
	with:
	images:
	ghcr.io/${{ github.repository }}-data-loading
	- name: Login to ghcr
	uses: docker/login-action@v1
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	# Setting up Docker Buildx with docker-container driver is required
	# at the moment to be able to use a subdirectory with Git context
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2
	- name: Push to GitHub Packages
	uses: docker/build-push-action@v4
	with:
	context: "{{defaultContext}}:data-loading"
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	build-args: BRANCH_NAME=${{ github.event.release.target_commitish }}

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