updated Blackfire to 2.28.2 #101

	name: build

	on:
	push:
	branches:
	- 'v2'
	tags:
	- '2.*'

	jobs:
	docker:
	runs-on: ubuntu-latest
	steps:
	-
	name: Checkout
	uses: actions/checkout@v2
	-
	name: Docker meta
	id: docker_meta
	uses: crazy-max/ghaction-docker-meta@v2
	with:
	images: blackfire/blackfire
	tags: \|
	type=ref,event=branch
	type=ref,event=tag
	type=raw,value=2
	-
	name: Set up QEMU
	uses: docker/setup-qemu-action@v1
	-
	name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v1
	-
	name: Login to DockerHub
	uses: docker/login-action@v1
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_PASSWORD }}
	-
	name: Build and push
	uses: docker/build-push-action@v2
	with:
	context: .
	platforms: linux/amd64,linux/386,linux/arm64
	push: true
	tags: ${{ steps.docker_meta.outputs.tags }}
	labels: ${{ steps.docker_meta.outputs.labels }}

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