Replace manual Cosign with GitHub Attestations #132
Workflow file for this run
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| name: build-custom-silverblue | |
| on: | |
| pull_request: | |
| merge_group: | |
| schedule: | |
| - cron: '5 3 * * *' # 3am-ish UTC everyday (timed against official fedora container pushes) | |
| workflow_dispatch: | |
| env: | |
| REGISTRY: ghcr.io | |
| jobs: | |
| build-custom-silverblue: | |
| name: Build, sign, then push | |
| runs-on: ubuntu-24.04 | |
| permissions: | |
| attestations: write | |
| contents: read | |
| id-token: write | |
| packages: write | |
| steps: | |
| - name: Checkout | |
| uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1 | |
| - name: Build image | |
| id: build | |
| uses: redhat-actions/buildah-build@7a95fa7ee0f02d552a32753e7414641a04307056 # v2.13 | |
| with: | |
| containerfiles: | | |
| ./Containerfile | |
| image: custom-silverblue | |
| tags: | | |
| ${{ github.sha }} | |
| 40 | |
| - name: Log in to GitHub Container Registry | |
| uses: redhat-actions/podman-login@4934294ad0449894bcd1e9f191899d7292469603 # v1.7 | |
| if: ${{ github.event_name != 'pull_request' }} | |
| with: | |
| username: ${{ github.actor }} | |
| password: ${{ secrets.GITHUB_TOKEN }} | |
| registry: ${{ env.REGISTRY }}/${{ github.repository_owner }} | |
| - name: Push to GitHub Container Registry | |
| uses: redhat-actions/push-to-registry@5ed88d269cf581ea9ef6dd6806d01562096bee9c # v2.8 | |
| id: push | |
| if: ${{ github.event_name != 'pull_request' }} | |
| with: | |
| image: ${{ steps.build.outputs.image }} | |
| tags: ${{ steps.build.outputs.tags }} | |
| registry: ${{ env.REGISTRY }}/${{ github.repository_owner }} | |
| - name: Generate artifact attestation | |
| uses: actions/attest-build-provenance@1c608d11d69870c2092266b3f9a6f3abbf17002c # v1.4.3 | |
| if: ${{ github.event_name != 'pull_request' }} | |
| with: | |
| subject-name: ${{ env.REGISTRY }}/${{ github.repository_owner }}/${{ steps.build.outputs.image }} | |
| subject-digest: ${{ steps.push.outputs.digest }} | |
| push-to-registry: true | |
| - name: Echo outputs for auditing | |
| if: github.event_name != 'pull_request' | |
| run: | | |
| echo "${{ toJSON(steps.push.outputs) }}" |