Docker publish externally #1

	name: Docker publish externally

	on:
	workflow_dispatch:
	inputs:
	version_number:
	description: "Version number of the Parabol application image to process"
	required: true

	jobs:
	pull-and-upload:
	runs-on: ubuntu-latest
	permissions:
	contents: "read"
	id-token: "write"
	steps:
	- name: Set up Docker
	uses: docker/setup-buildx-action@v3

	- id: "auth"
	name: "Authenticate to Google Cloud"
	uses: "google-github-actions/auth@v2"
	with:
	token_format: "access_token"
	workload_identity_provider: ${{ secrets.GCP_WI_PROVIDER_NAME }}
	service_account: ${{ secrets.GCP_SA_EMAIL }}

	- uses: "docker/login-action@v3"
	with:
	registry: ${{ secrets.GCP_DOCKER_REGISTRY }}
	username: "oauth2accesstoken"
	password: "${{ steps.auth.outputs.access_token }}"

	- name: Pull Docker image from GCP
	run: docker pull ${{ secrets.GCP_AR_PARABOL}}:v${{ github.event.inputs.version_number }}

	- name: Push Docker image to the external repository
	run: \|-
	gcloud container images add-tag -q \
	${{ secrets.GCP_AR_PARABOL }}:v${{ github.event.inputs.version_number }} \
	${{ secrets.GCP_AR_PARABOL_EXTERNAL }}:v${{ github.event.inputs.version_number }}

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