Add the resource_key back to the repository build.

endpoints/webhooks.py

@@ -84,10 +84,10 @@ def build_trigger_webhook(namespace, repository, trigger_uuid):
       'docker_tags': tags,
       'repository': repo,
       'build_subdir': subdir,
-      'resource_key': dockerfile_id,
     }
     build_request = model.create_repository_build(trigger.repository, token,
-                                                  job_config, name, trigger)
+                                                  job_config, dockerfile_id,
+                                                  name, trigger)
 
     dockerfile_build_queue.put(json.dumps({
       'build_uuid': build_request.uuid,