fix #4

	name: Create and publish a Docker image

	# Configures this workflow to run every time a tag is pushed.
	on:
	push:
	tags:
	- '*'

	# Defines two custom environment variables for the workflow. These are used for the Container registry domain, and a name for the Docker image that this workflow builds.
	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}

	# There is a single job in this workflow. It's configured to run on the latest available version of Ubuntu.
	jobs:
	build-and-push-image:
	runs-on: ubuntu-latest
	# Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
	permissions:
	contents: read
	packages: write
	attestations: write
	id-token: write
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Log in to the Container registry
	uses: docker/login-action@v2
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
	tags: \|
	type=ref,event=tag
	labels: \|
	type=ref,event=tag

	- name: Build and push Docker image
	id: push
	uses: docker/build-push-action@v4
	with:
	context: .
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

	- name: Generate artifact attestation
	uses: actions/attest-build-provenance@v1
	with:
	subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
	subject-digest: ${{ steps.push.outputs.digest }}
	push-to-registry: true

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