Bump actions/checkout from 3 to 4 (#19) #48

	name: Docker
	on:
	push:
	# Publish `master` as Docker `latest` image.
	branches:
	- main
	# Publish `v1.2.3` tags as releases.
	tags:
	- v*
	# Run tests for any PRs.
	pull_request:
	env:
	# TODO: Change variable to your image's name.
	IMAGE_NAME: flutter-docker
	jobs:
	# Run tests.
	# See also https://docs.docker.com/docker-hub/builds/automated-testing/
	test:
	runs-on: ubuntu-20.04
	if: github.event_name == 'pull_request'
	steps:
	- uses: actions/checkout@v4
	- name: Run tests
	run: \|
	if [ -f docker-compose.test.yml ]; then
	docker-compose --file docker-compose.test.yml build
	docker-compose --file docker-compose.test.yml run sut
	else
	docker build . --file Dockerfile
	fi
	# Push image to GitHub Package Registry.
	# See also https://docs.docker.com/docker-hub/builds/
	docker-push:
	# Ensure test job passes before pushing image.
	runs-on: ubuntu-20.04
	if: github.event_name == 'push'
	steps:
	- uses: actions/checkout@v4
	- name: Login to Docker Hub
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_TOKEN }}
	- name: Log in to the Container registry
	uses: docker/login-action@v2
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: \|
	bervproject/${{ env.IMAGE_NAME }}
	ghcr.io/${{ github.repository }}
	- name: Build and push Docker images
	uses: docker/build-push-action@v4
	with:
	context: .
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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