code: def list_azure_containers(config_fpath):
      
      config_content = _get_config_dict_from_file(config_fpath)
      az_container_names = []
      for key in config_content.keys():
          if key.startswith(AZURE_KEY_PREFIX):
              name = key[len(AZURE_KEY_PREFIX):]
              az_container_names.append(name)
      return sorted(az_container_names)
docs: List the azure storage containers in the config file.
  
      :param config_fpath: path to the dtool config file
      :returns: the list of azure storage container names