docs: def spawn_container(addr, env_cls=Environment,
                      mgr_cls=EnvManager, set_seed=True, *args, **kwargs):
      """Spawn a new environment in a given address as a coroutine.
  
      Arguments and keyword arguments are passed down to the created environment
      at initialization time.
  
      If `setproctitle <https://pypi.python.org/pypi/setproctitle>`_ is
      installed, this function renames the title of the process to start with
      'creamas' so that the process is easily identifiable, e.g. with
      ``ps -x | grep creamas``.
      """
      # Try setting the process name to easily recognize the spawned
      # environments with 'ps -x' or 'top'
      try:
          import setproctitle as spt
          title = 'creamas: {}({})'.format(env_cls.__class__.__name__,
                                           _get_base_url(addr))
          spt.setproctitle(title)
      except:
          pass
  
      if set_seed:
          _set_random_seeds()
  
      # kwargs['codec'] = aiomas.MsgPack
      task = start(addr, env_cls, mgr_cls, *args, **kwargs)
      loop = asyncio.new_event_loop()
      asyncio.set_event_loop(loop)
      loop.run_until_complete(task)