fix build

.github/workflows/build.yml

@@ -4,6 +4,10 @@ on:
   - push
   - workflow_dispatch
 
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
 jobs:
   setup:
     runs-on: ubuntu-latest
@@ -25,12 +29,11 @@ jobs:
 
     needs: setup
 
-    outputs:
-      imageid: ${{ steps.image }}
-
     permissions:
-      packages: write
       contents: read
+      packages: write
+      attestations: write
+      id-token: write
 
     runs-on: ubuntu-latest
 
@@ -53,12 +56,18 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       - id: meta
         name: Construct image tags and labels
         uses: docker/metadata-action@v5
         with:
-          images: |
-            ghcr.io/berkeleylibrary/geodata
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           labels: |
             edu.berkeley.lib.build-timestamp=${{ github.event.repository.updated_at }}
             edu.berkeley.lib.build-url=${{ needs.setup.outputs.build_url }}
@@ -73,8 +82,8 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
             type=semver,pattern={{major}}
 
-      - id: image
-        name: Build the docker image
+      - id: push
+        name: Build and push docker image
         uses: docker/build-push-action@v6
         with:
           context: .
@@ -88,3 +97,10 @@ jobs:
           push: true
           labels: ${{ steps.meta.outputs.labels }}
           tags: ${{ steps.meta.outputs.tags }}
+
+      - name: Generate artifact attestation
+        uses: actions/attest-build-provenance@v2
+        with:
+          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
+          subject-digest: ${{ steps.push.outputs.digest }}
+          push-to-registry: true