def get_system_app_dir(self)->str:
        """
        system app dir is the dir for aios build-in app 
        /opt/aios/app
        """
        if self.is_dev_mode:
            return os.path.abspath(_file_dir + "/../../../rootfs/")
        else:
            return "/opt/aios/app/"

        system app dir is the dir for aios build-in app 
        /opt/aios/app
        
src/aios/storage/storage.py