Add Attestations

.github/workflows/ci.yml

@@ -431,5 +431,6 @@ jobs:
       contents: write
       pages: write
       id-token: write
+      attestations: write
     secrets: inherit
     uses: ./.github/workflows/release.yml

.github/workflows/release.yml

@@ -14,6 +14,7 @@ jobs:
     environment: release
     permissions:
       id-token: write
+      attestations: write
     steps:
       - name: Download artifact
         uses: actions/download-artifact@v4
@@ -22,6 +23,11 @@ jobs:
           merge-multiple: true
           path: wheelhouse
 
+      - name: Add attestations
+        uses: actions/attest-build-provenance@v1
+        with:
+          subject-path: wheelhouse/*.whl
+
       - name: Publish package distributions to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
@@ -103,6 +109,7 @@ jobs:
           password: ${{ secrets.DOCKER_PASSWORD }}
 
       - name: Push to Docker Hub
+        id: publish-docker-hub
         run: |
           tags=(${{ steps.tags.outputs.tags }})
           for image in fasttrackml-oci-*.tar
@@ -118,6 +125,28 @@ jobs:
             $(printf -- "--tag ${{ vars.DOCKER_REPO }}:%s " ${tags[@]}) \
             $(printf "${{ vars.DOCKER_REPO }}@%s " ${digests[@]})
           echo "::endgroup::"
+          # Output digests as a JSON array for use in a matrix
+          echo "digests=$(printf '%s\n' "${digests[@]}" | jq -R . | jq -s .)" >> $GITHUB_OUTPUT
+    outputs:
+      digests: ${{ steps.publish-docker-hub.outputs.digests }}
+
+  attest-docker-images:
+    name: Publish Docker images attestations
+    runs-on: ubuntu-latest
+    needs: docker-release
+    permissions:
+      id-token: write
+      attestations: write
+    strategy:
+      matrix:
+        digest: ${{ fromJson(needs.docker-release.outputs.digests) }}
+    steps:
+      - name: Attest Each Docker Image
+        uses: actions/attest-build-provenance@v2
+        with:
+          subject-name: index.docker.io/${{ vars.DOCKER_REPO }}
+          subject-digest: ${{ matrix.digest }}
+          push-to-registry: true
 
   chart-release:
     name: Publish Helm chart