Update docker-publish.yml

Author: ptrumpis

.github/workflows/docker-publish.yml

@@ -62,3 +62,4 @@ jobs:
             ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
           cache-from: type=gha
           cache-to: type=gha,mode=max
+          attest: false  # FIX für unknown/unknown