readme update #74

	name: Build and Publish

	on:
	push:
	branches: [main]
	pull_request:

	jobs:
	build-and-push-docker-image:
	name: Build Docker image and push to repositories
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Set up Docker Buildx
	id: buildx
	uses: docker/setup-buildx-action@v2

	- name: Login to DockerHub
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}

	- name: Build image and push to Docker Hub and GitHub Container Registry
	uses: docker/build-push-action@v2
	with:
	context: .
	tags: \|
	stackql/stackql-jupyter-demo:latest
	stackql/stackql-jupyter-demo:${{github.sha}}
	# build on feature branches, push only on main branch
	push: ${{ github.ref == 'refs/heads/main' }}

	- name: Image digest
	run: echo ${{ steps.docker_build.outputs.digest }}

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