Another two-letter addition #150

	name: Docker

	on:
	push:
	branches: [ master ]

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	-
	name: Checkout
	uses: actions/checkout@v2
	-
	name: Login to Docker Hub
	uses: docker/login-action@v1
	with:
	username: ${{ secrets.DOCKER_HUB_USERNAME }}
	password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
	-
	name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v1
	-
	name: Build and push latest
	uses: docker/build-push-action@v2
	with:
	context: .
	file: ./docker/Dockerfile
	push: true
	tags: ${{ secrets.DOCKER_HUB_USERNAME }}/mchprs:latest
	-
	name: Build and push plot-scale-5
	uses: docker/build-push-action@v2
	with:
	context: .
	file: ./docker/Dockerfile-plot-scale-5
	push: true
	tags: ${{ secrets.DOCKER_HUB_USERNAME }}/mchprs:plot-scale-5

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