Ouput file is also stored in data-volumne, therefore it needs to be read and write

Author: frankcorneliusmartin

vantage/node/docker_manager.py

@@ -186,7 +186,7 @@ def run(self, result_id: int,  image: str, database_uri: str,
                     },
                     os.environ["DATA_VOLUME_NAME"]:{
                         "bind": "/mnt/data-volume", 
-                        "mode": "ro"
+                        "mode": "rw"
                     }
                 }
             )