subject-tag: 'latest'

Author: nebyri

.github/workflows/docker.yml

@@ -49,7 +49,6 @@ jobs:
               uses: actions/attest-build-provenance@v2
               with:
                 subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
-                subject-digest: |
-                  ${{ steps.push.outputs.digest }}
-                  'latest'
+                subject-digest: ${{ steps.push.outputs.digest }}
+                subject-tag: 'latest'
                 push-to-registry: true