Reapply "Upgrade to Debian Bookworm and Python 3.11 (#4028)" #432

	name: Update Docker image
	on:
	push:
	# Rebuild the image when Dockerfile is changed. This is safe on a PR
	# branch, too -- the automatically built Docker image will be tagged with
	# the branch name instead of "latest".
	paths:
	- 'Dockerfile'
	- '.github/workflows/docker-update.yml'
	schedule:
	# Rebuild the image weekly.
	- cron: '0 0 * * 0'
	jobs:
	build-and-push:
	# Forks and dependabot cannot access secrets so the job would fail.
	# Run for non dependabot PRs or regular pushes to web-platform-tests/wpt.fyi
	if: \|
	(github.repository == 'web-platform-tests/wpt.fyi' && github.actor != 'dependabot[bot]') &&
	((github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == 'web-platform-tests/wpt.fyi') \|\|
	(github.event_name != 'pull_request'))
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: elgohr/Publish-Docker-Github-Action@v5
	# https://github.com/elgohr/Publish-Docker-Github-Action
	with:
	name: webplatformtests/wpt.fyi
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_TOKEN }}
	dockerfile: Dockerfile
	snapshot: true

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