Output git commit id when running #300

	name: Build Docker image
	on:
	workflow_dispatch:
	push:
	branches:
	- master

	concurrency:
	group: docker
	cancel-in-progress: true

	jobs:
	docker:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Add git environment variables
	id: env-variables
	run: \|
	echo "BBP_GIT_INFO=\"$(git rev-parse HEAD) $(date --iso-8601=seconds)\"" >> "$GITHUB_OUTPUT"
	git rev-parse HEAD > ogc/na/_VERSION

	- name: Log in to the Container registry
	if: github.event_name != 'pull_request'
	uses: docker/login-action@v2
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: ghcr.io/opengeospatial/bblocks-postprocess
	tags: \|
	type=raw,value=latest,enable={{is_default_branch}}
	type=ref,event=branch
	type=ref,event=tag

	- name: Build and push Docker image
	uses: docker/build-push-action@v4
	with:
	context: .
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	build-args: \|
	BBP_GIT_INFO=${{ steps.env-variables.outputs.BBP_GIT_INFO }}

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