docs: def ensure_container(self, name=None):
          """Make sure container exists. It's only needed on newer
          versions of LXC."""
          if get_lxc_version() < pkg_resources.parse_version('2.0.0'):
              # Nothing to do for old versions of LXC
              return
  
          if name is None:
              name = self.container_name
  
          args = [
              'lxc-create',
              '--name', name,
              '--template', 'none',
              '>', '/dev/null', '2>&1',
          ]
          os.system(' '.join(args))