fix: storage dir exist will raise error (#168)

* fix: update python to python3 in myph.sh

* fix: storage dir exist error

* fix: dockerfile arg error (#169)

* revert

custom_components/midea_ac_lan/config_flow.py

@@ -124,7 +124,7 @@ def __init__(self) -> None:
     def _save_device_config(self, data: dict[str, Any]) -> None:
         """Save device config to json file with device id."""
         storage_path = Path(self.hass.config.path(STORAGE_PATH))
-        Path.mkdir(storage_path, parents=True)
+        Path.mkdir(storage_path, parents=True, exist_ok=True)
         record_file = Path(storage_path, data[CONF_DEVICE_ID], ".json")
         save_json(record_file.name, data)