Update ci.yml #364

	name: Docker

	on:
	push:
	branches: [ "main" ]

	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}


	jobs:
	build:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write
	# This is used to complete the identity challenge
	# with sigstore/fulcio when running outside of PRs.
	id-token: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	- name: Install cosign
	if: github.event_name != 'pull_request'
	uses: sigstore/cosign-installer@v3
	- name: Setup Docker buildx
	uses: docker/setup-buildx-action@v3
	- name: Log into registry ${{ env.REGISTRY }}
	if: github.event_name != 'pull_request'
	uses: docker/login-action@v3
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	- name: Extract Docker metadata
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
	- name: Build and push Docker image
	id: build-and-push
	uses: docker/build-push-action@v6
	with:
	context: .
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	cache-from: type=gha
	cache-to: type=gha,mode=max
	- name: Sign the published Docker image
	if: ${{ github.event_name != 'pull_request' }}
	env:
	COSIGN_EXPERIMENTAL: "true"
	# This step uses the identity token to provision an ephemeral certificate
	# against the sigstore community Fulcio instance.
	run: echo "${{ steps.meta.outputs.tags }}" \| xargs -I {} cosign sign {}@${{ steps.build-and-push.outputs.digest }}

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