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feat: SLSA 3
Updates the CI to make policy server SLSA 3 complaint by providing the SBOM and provenance files. Signed-off-by: José Guilherme Vanz <jguilhermevanz@suse.com>
1 parent e7ca8f9 commit c521e03

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+316
-224
lines changed

‎.github/workflows/attestation.yml

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name: Sign attestation files
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on:
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workflow_call:
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inputs:
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image-digest:
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type: string
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required: true
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jobs:
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sbom:
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name: Fetch, sign and verify SBOM and provenance files
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strategy:
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matrix:
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arch: [amd64, arm64]
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permissions:
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packages: write
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id-token: write
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runs-on: ubuntu-latest
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steps:
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- name: Install cosign
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uses: sigstore/cosign-installer@4959ce089c160fddf62f7b42464195ba1a56d382 # v3.6.0
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- name: Install the crane command
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uses: kubewarden/github-actions/crane-installer@d94509d260ee11a92b4f65bc0acd297feec24d7f # v3.3.5
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- name: Login to GitHub Container Registry
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uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
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with:
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registry: ghcr.io
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username: ${{ github.repository_owner }}
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password: ${{ secrets.GITHUB_TOKEN }}
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- name: Verify container image signature
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run: |
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cosign verify \
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--certificate-oidc-issuer=https://token.actions.githubusercontent.com \
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--certificate-identity="https://github.com/${{github.repository_owner}}/policy-server/.github/workflows/container-image.yml@${{ github.ref }}" \
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ghcr.io/${{ github.repository_owner }}/policy-server@${{ inputs.image-digest }}
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- name: Find platform digest
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shell: bash
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run: |
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set -e
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DIGEST=$(crane digest \
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--platform "linux/${{ matrix.arch }}" \
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ghcr.io/${{ github.repository_owner }}/policy-server@${{ inputs.image-digest }})
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echo "PLATFORM_DIGEST=${DIGEST}" >> "$GITHUB_ENV"
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- name: Find attestation digest
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run: |
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set -e
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DIGEST=$(crane manifest ghcr.io/${{github.repository_owner}}/policy-server@${{ inputs.image-digest }} \
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| jq '.manifests[] | select(.annotations["vnd.docker.reference.type"]=="attestation-manifest") | select(.annotations["vnd.docker.reference.digest"]=="${{ env.PLATFORM_DIGEST }}") | .digest'
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)
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echo "ATTESTATION_MANIFEST_DIGEST=${DIGEST}" >> "$GITHUB_ENV"
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- name: Find provenance manifest digest
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run: |
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set -e
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DIGEST=$(crane manifest ghcr.io/${{github.repository_owner}}/policy-server@${{ env.ATTESTATION_MANIFEST_DIGEST}} | \
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jq '.layers[] | select(.annotations["in-toto.io/predicate-type"] == "https://slsa.dev/provenance/v0.2") | .digest')
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echo "PROVENANCE_DIGEST=${DIGEST}" >> "$GITHUB_ENV"
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- name: Find SBOM manifest layers digest
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run: |
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set -e
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DIGEST=$(crane manifest ghcr.io/${{github.repository_owner}}/policy-server@${{ env.ATTESTATION_MANIFEST_DIGEST}} | \
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jq '.layers | map(select(.annotations["in-toto.io/predicate-type"] == "https://spdx.dev/Document")) | map(.digest) | join(" ")')
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echo "SBOM_DIGEST=${DIGEST}" >> "$GITHUB_ENV"
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- name: Download provenance and SBOM files
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run: |
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set -e
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crane blob ghcr.io/${{github.repository_owner}}/policy-server@${{ env.PROVENANCE_DIGEST}} > policy-server-attestation-${{ matrix.arch }}-provenance.json
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sha256sum policy-server-attestation-${{ matrix.arch }}-provenance.json >> policy-server-attestation-${{ matrix.arch }}-checksum.txt
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for sbom_digest in "${{ env.SBOM_DIGEST }}"; do
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crane blob ghcr.io/${{github.repository_owner}}/policy-server@$sbom_digest > policy-server-attestation-${{ matrix.arch }}-sbom-${sbom_digest#"sha256:"}.json
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sha256sum policy-server-attestation-${{ matrix.arch }}-sbom-${sbom_digest#"sha256:"}.json >> policy-server-attestation-${{ matrix.arch }}-checksum.txt
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done
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- name: Sign checksum file
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run: |
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cosign sign-blob --yes \
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--bundle policy-server-attestation-${{ matrix.arch }}-checksum-cosign.bundle \
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policy-server-attestation-${{ matrix.arch }}-checksum.txt
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cosign verify-blob \
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--bundle policy-server-attestation-${{ matrix.arch }}-checksum-cosign.bundle \
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--certificate-oidc-issuer=https://token.actions.githubusercontent.com \
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--certificate-identity="https://github.com/${{github.repository_owner}}/policy-server/.github/workflows/attestation.yml@${{ github.ref }}" \
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policy-server-attestation-${{ matrix.arch }}-checksum.txt
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- name: Upload SBOMs as artifacts
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uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874 # v4.4.0
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with:
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name: attestation-${{ matrix.arch }}
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path: policy-server-attestation-${{ matrix.arch }}*

‎.github/workflows/container-build.yml

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uses: ./.github/workflows/container-image.yml
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permissions:
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packages: write
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sign:
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needs: build
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uses: ./.github/workflows/sign-image.yml
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permissions:
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packages: write
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id-token: write
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with:
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image-digest: ${{ needs.build.outputs.digest }}
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sbom:
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needs: build
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uses: ./.github/workflows/sbom.yml
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needs:
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- build
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uses: ./.github/workflows/attestation.yml
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permissions:
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packages: write
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id-token: write

‎.github/workflows/container-image.yml

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value: ${{ jobs.build.outputs.digest }}
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jobs:
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cross-build:
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name: Cross compile policy-server binary
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runs-on: ubuntu-latest
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strategy:
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matrix:
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targetarch:
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- aarch64
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- x86_64
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steps:
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- name: Checkout code
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uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
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- name: Setup rust toolchain
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uses: actions-rs/toolchain@16499b5e05bf2e26879000db0c1d13f7e13fa3af # v1.0.7
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with:
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toolchain: stable
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target: ${{matrix.targetarch}}-unknown-linux-musl
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override: true
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- uses: actions-rs/cargo@844f36862e911db73fe0815f00a4a2602c279505 # v1.0.3
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with:
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use-cross: true
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command: build
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args: --release --target ${{matrix.targetarch}}-unknown-linux-musl
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- name: Upload policy-server binary
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uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874 # v4.4.0
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with:
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name: policy-server-${{ matrix.targetarch }}
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path: |
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target/${{ matrix.targetarch }}-unknown-linux-musl/release/policy-server
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build:
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name: Build container image
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permissions:
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packages: write
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needs:
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- cross-build
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id-token: write
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runs-on: ubuntu-latest
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outputs:
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repository: ${{ steps.setoutput.outputs.repository }}
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steps:
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- name: Checkout code
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uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
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- name: Install cosign
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uses: sigstore/cosign-installer@4959ce089c160fddf62f7b42464195ba1a56d382 # v3.6.0
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- name: Set up QEMU
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uses: docker/setup-qemu-action@49b3bc8e6bdd4a60e6116a5414239cba5943d3cf # v3.2.0
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@c47758b77c9736f4b2ef4073d4d51994fabfe349 # v3.7.1
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- name: Login to GitHub Container Registry
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uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
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with:
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registry: ghcr.io
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username: ${{ github.repository_owner }}
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password: ${{ secrets.GITHUB_TOKEN }}
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# Download the policy-server artifacts we've built inside of the previous job
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- name: Download policy-server-x86_64 artifact
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uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
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with:
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name: policy-server-x86_64
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path: artifacts-x86_64
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- name: Download policy-server-aarch64 artifact
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uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
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with:
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name: policy-server-aarch64
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path: artifacts-aarch64
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- name: Move binaries to project root
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run: |
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mv artifacts-x86_64/policy-server policy-server-x86_64
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mv artifacts-aarch64/policy-server policy-server-aarch64
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- name: Retrieve tag name (main branch)
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if: ${{ startsWith(github.ref, 'refs/heads/main') }}
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run: |
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echo TAG_NAME=latest >> $GITHUB_ENV
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- name: Retrieve tag name (feat branch)
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if: ${{ startsWith(github.ref, 'refs/heads/feat') }}
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run: |
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echo "TAG_NAME=latest-$(echo ${GITHUB_REF#refs/heads/})" >> $GITHUB_ENV
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- name: Retrieve tag name (tag)
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if: ${{ startsWith(github.ref, 'refs/tags/') }}
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run: |
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echo TAG_NAME=$(echo $GITHUB_REF | sed -e "s|refs/tags/||") >> $GITHUB_ENV
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- name: Push and push container image
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id: build-image
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uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75 # v6.9.0
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with:
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context: .
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file: ./Dockerfile.github
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file: ./Dockerfile
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platforms: linux/amd64, linux/arm64
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push: true
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sbom: true
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provenance: mode=max
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tags: |
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ghcr.io/${{github.repository_owner}}/policy-server:${{ env.TAG_NAME }}
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- name: Sign container image
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run: |
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cosign sign --yes ghcr.io/${{github.repository_owner}}/policy-server@${{ steps.build-image.outputs.digest }}
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cosign verify \
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--certificate-oidc-issuer=https://token.actions.githubusercontent.com \
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--certificate-identity-regexp="https://github.com/${{github.repository_owner}}/policy-server/.github/workflows/container-image.yml@${{ github.ref }}" \
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ghcr.io/${{github.repository_owner}}/policy-server@${{ steps.build-image.outputs.digest }}
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- id: setoutput
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name: Set output parameters
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run: |

‎.github/workflows/release.yml

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- name: Checkout code for kubewarden-dashboard.json
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uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
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- name: Download SBOM artifact
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- name: Download attestation artifact
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uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
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with:
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pattern: sbom-*
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pattern: attestation-*
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path: ./
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merge-multiple: true
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- name: Display structure of downloaded files
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run: ls -R
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- name: Create tarball for the attestation files
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run: |
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for arch in "amd64" "arm64"; do
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tar -czf attestation-$arch.tar.gz $(ls policy-server-attestation-$arch-*)
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done
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- name: Upload release assets
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id: upload_release_assets
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uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
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let path = require('path');
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let files = [
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'policy-server-sbom-amd64.spdx',
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'policy-server-sbom-amd64.spdx.cert',
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'policy-server-sbom-amd64.spdx.sig',
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'policy-server-sbom-arm64.spdx',
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'policy-server-sbom-arm64.spdx.cert',
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'policy-server-sbom-arm64.spdx.sig',
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'attestation-amd64.tar.gz',
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'attestation-arm64.tar.gz',
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'kubewarden-dashboard.json']
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const {RELEASE_ID} = process.env
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‎.github/workflows/sbom.yml

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