fix push action ids

Author: perfectra1n

.github/workflows/main.yml

@@ -179,7 +179,7 @@ jobs:
       - uses: docker/setup-buildx-action@v3
       - name: Build and push container image to GHCR
         uses: docker/build-push-action@v6
-        id: push
+        id: ghcr-push
         with:
           context: .
           push: true
@@ -191,7 +191,7 @@ jobs:
         uses: actions/attest-build-provenance@v1
         with:
           subject-name: ${{ env.GHCR_REGISTRY }}/${{ env.IMAGE_NAME}}
-          subject-digest: ${{ steps.push.outputs.digest }}
+          subject-digest: ${{ steps.ghcr-push.outputs.digest }}
           push-to-registry: true
       - name: Log in to the GHCR container registry
         uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
@@ -201,11 +201,17 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Build and push image to DockerHub
         uses: docker/build-push-action@v6
-        id: push
+        id: dh-push
         with:
           context: .
           push: true
           tags: ${{ steps.dh-meta.outputs.tags }}
           labels: ${{ steps.dh-meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
+      - name: Generate and push artifact attestation to DockerHub
+        uses: actions/attest-build-provenance@v1
+        with:
+          subject-name: ${{ env.DOCKERHUB_REGISTRY }}/${{ env.IMAGE_NAME}}
+          subject-digest: ${{ steps.dh-push.outputs.digest }}
+          push-to-registry: true