Update README.rst #29

	name: Create and publish a package
	on:
	push:
	branches: ["master"]
	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}
	jobs:
	build-and-push-image:
	runs-on: ubuntu-20.04
	steps:
	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

	- name: Login to GitHub Container Registry
	uses: docker/login-action@v3
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build container image
	uses: docker/build-push-action@v5
	with:
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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