Use multistage docker build #24

	name: build_canary

	on:
	push:
	branches:
	- 'master'

	jobs:
	docker:
	runs-on: ubuntu-latest
	steps:
	-
	name: Checkout
	uses: actions/checkout@v3

	-
	name: Set COMPOSER_ROOT_VERSION environment variable
	uses: "ergebnis/composer-root-version-action@main"
	with:
	branch: master

	-
	name: Docker meta
	id: docker_meta
	uses: docker/metadata-action@v4
	with:
	images: blackfire/player
	flavor: \|
	latest=false
	tags: \|
	type=raw,value=canary
	-
	name: Set up QEMU
	uses: docker/setup-qemu-action@v2
	-
	name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2
	-
	name: Login to DockerHub
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_PASSWORD }}
	-
	name: Build and push
	uses: docker/build-push-action@v4
	with:
	context: .
	platforms: linux/amd64,linux/386,linux/arm64
	build-args: \|
	BLACKFIRE_PLAYER_VERSION=${{ env.COMPOSER_ROOT_VERSION }}
	push: true
	tags: ${{ steps.docker_meta.outputs.tags }}
	labels: ${{ steps.docker_meta.outputs.labels }}

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