island: Can't use `with` with `os.open()`, use `os.close()` to close file descriptor

monkey/monkey_island/cc/environment/utils.py

@@ -62,9 +62,7 @@ def _create_secure_file_linux(path: str):
             os.O_RDWR | os.O_CREAT | os.O_EXCL
         )  # read/write, create new, throw error if file exists
         mode = 0o700  # read/write/execute permissions to owner
-
-        with os.open(path, flags, mode) as x:  # noqa: F841
-            pass
+        os.close(os.open(path, flags, mode))
 
     except Exception as ex:
         LOG.error(f'Could not create a file at "{path}": {str(ex)}')