class_docstr: A node provider that implements multi-node on a single machine.
  
  This is used for laptop mode testing of multi node functionality
  where each node has their own FS and IP.
class_docstr_tok: ["A","node","provider","that","implements","multi-node","on","a","single","machine",".","This","is","used","for","laptop","mode","testing","of","multi","node","functionality","where","each","node","has","their","own","FS","and","IP","."]
code: def is_terminated(self, node_id):
      with self.lock:
          self._update_nodes()
  
          return (
              node_id not in self._nodes
              and not self._is_docker_running(node_id)
          )
  
imports: import copy
  import json
  import logging
  import os
  import subprocess
  import sys
  import time
  from threading import RLock
  from types import ModuleType
  from typing import Any, Dict, Optional
  import yaml
  import ray
  import ray._private.ray_constants
  from ray.autoscaler._private.fake_multi_node.command_runner import FakeDockerCommandRunner
  from ray.autoscaler.command_runner import CommandRunnerInterface
  from ray.autoscaler.node_provider import NodeProvider
  from ray.autoscaler.tags import NODE_KIND_HEAD, NODE_KIND_WORKER, STATUS_UP_TO_DATE, TAG_RAY_NODE_KIND, TAG_RAY_NODE_NAME, TAG_RAY_NODE_STATUS, TAG_RAY_USER_NODE_TYPE
label_desc: Use image node_id 14 for calling the FakeMultiNodeDockerProvider obj's underlying member method code with example usage: obj.is_terminated(node_id) and returns: unknown