xargs #5

	name: Docker Image CI

	on:
	workflow_dispatch:
	push:
	branches: [ "main" ]
	pull_request:
	branches: [ "main" ]

	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}
	TAG: "3.1"

	jobs:

	main-root:
	outputs:
	is-main: ${{ steps.is-main-root.outputs.test }}
	runs-on: ubuntu-latest
	steps:
	- name: Echo a message
	if: github.ref == 'refs/heads/main' && github.repository == 'commonhaus/pandoc-pdf'
	id: is-main-root
	run: echo "test=true" >> "$GITHUB_OUTPUT"

	build:
	needs: main-root
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: ${{ github.repository }}
	tags: \|
	type=raw,enable=true,priority=200,prefix=,suffix=,value=${{ env.TAG }}

	- name: Log in to the Container registry
	if: ${{needs.main-root.outputs.is-main}}
	uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push Docker image
	uses: docker/[email protected]
	with:
	context: .
	push: false
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}


	- name: Publish OCI image to GCR
	if: ${{needs.main-root.outputs.is-main}}
	id: publish-oci
	run: \|
	image="${IMAGE_NAME}:${TAG}"
	docker tag "${image}" "ghcr.io/${image}"
	docker push "ghcr.io/${image}"

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