code: def container_id(self, name):
          '''Try to find the container ID with the specified name'''
          container = self._containers.get(name, None)
          if not container is None:
              return container.get('id', None)
          return Nonf container_id(self, name):
          '''Try to find the container ID with the specified name'''
          container = self._containers.get(name, None)
          if not container is None:
              return container.get('id', None)
          return None
docs: Try to find the container ID with the specified name