not store config file just read if exist or overwrite default_snake_config

server/Server.py

@@ -1,4 +1,4 @@
-from server.Files import read_file, save_file
+from server.Files import read_file
 from server.GameStorage import GameStorage
 from snakes.TemplateSnake import TemplateSnake
 from server.SnakeBuilder import SnakeBuilder
@@ -64,11 +64,11 @@ class Server:
     snake_config = read_file(self.config_file, json.load)
     if not snake_config:
       snake_config = self._override_snake_config_with_environment_variables(self.default_snake_config)
-      save_file(self.config_file, snake_config, callback=json.dump, indent=2, ensure_ascii=False)
+
     return self._override_snake_config_with_environment_variables(snake_config)
 
   def _override_snake_config_with_environment_variables(self, config:dict[str]):
-    for key in ["color", "head", "tail"]:
+    for key in ["author", "color", "head", "tail"]:
       if os.environ.get(f"SNAKE_{key.upper()}", None):
         config[key.lower()] = os.environ.get(f"SNAKE_{key.upper()}")
     return config