include information about last_run_success metric in README #268

	name: build

	on:
	push:
	branches:
	- "*"
	tags:
	- "v*"
	pull_request:
	branches:
	- "master"

	env:
	REGISTRY: quay.io
	IMAGE_NAME: ${{ github.repository }}

	jobs:
	docker:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Set up QEMU
	uses: docker/setup-qemu-action@v1
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v1
	- name: Login to Quay.io Container Registry
	uses: docker/login-action@v1
	with:
	registry: quay.io
	username: utilitywarehouse+drone_ci
	password: ${{ secrets.SYSTEM_QUAY_TOKEN }}
	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v3
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
	- name: Build and push Docker image
	uses: docker/build-push-action@v2
	with:
	context: .
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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