Check if a container is excluded according to the filter rules.

        Requires _filter_containers to run first.

def _is_container_excluded(self, container):
        """Check if a container is excluded according to the filter rules.

        Requires _filter_containers to run first.
        """
        container_name = DockerUtil.container_name_extractor(container)[0]
        return container_name in self._filtered_containers