Add github action file to publish docker image #1

	name: Docker Image CI
	on:
	push:
	branches:
	- main
	tags: '*'

	jobs:
	build_and_publish:
	if: github.repository == 'genome-nexus/vcf2maf-lite'
	runs-on: ubuntu-latest
	steps:
	- name: Checkout git repo
	uses: actions/checkout@v3

	- name: Extract metadata
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: \|
	genomenexus/vcf2maf-lite
	# The latest tag will also be generated on tag event with a valid semver tag
	tags: \|
	type=ref,event=branch
	type=semver,pattern={{version}}

	# The following two actions are required to build multi-platform images
	# buildx is an extension of docker build, QUEM is used to convert the binary to varies architecture
	- 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.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_PASSWORD }}

	- name: Publish Docker Image on Tag
	uses: docker/build-push-action@v3
	with:
	context: .
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	platforms: linux/amd64,linux/arm64
	file: Dockerfile
	cache-from: type=gha
	cache-to: type=gha

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