Build and publish Docker image #843

	name: Build and publish Docker image

	on:
	schedule:
	- cron: '0 0 * * *' # At 00:00.
	push:
	tags:
	- '..*'
	pull_request:
	branches:
	- 'master'

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

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	-
	name: Checkout
	uses: actions/checkout@v2
	-
	name: Docker meta
	id: docker_meta
	uses: docker/metadata-action@v3
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
	-
	name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v1
	-
	name: Login to DockerHub
	if: github.event_name != 'pull_request'
	uses: docker/login-action@v1
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	-
	name: Build and push
	id: docker_build
	uses: docker/build-push-action@v2
	with:
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.docker_meta.outputs.tags }}
	labels: ${{ steps.docker_meta.outputs.labels }}

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