fix:setting correct address on index (#848)

Author: pacostas

.github/workflows/push-buildpackage.yml

@@ -143,7 +143,7 @@ jobs:
       with:
         id: ${{ github.repository }}
         version: ${{ steps.event.outputs.tag_full }}
-        address: ${{ steps.push.outputs.image }}@${{ steps.push.outputs.digest }}
+        address: index.docker.io/${{ steps.push.outputs.image }}@${{ steps.push.outputs.digest }}
         token: ${{ secrets.PAKETO_BOT_GITHUB_TOKEN }}
 
   failure: