code: def pull_docker_image(docker_image: str) -> None:
      """Pull the requested docker image."""
      try:
          docker.run(["docker", "pull", docker_image])
      except docker.DockerError as e:
          raise LaunchError(f"Docker server returned error: {e}")
  
imports: import asyncio
  import json
  import logging
  import os
  import platform
  import re
  import subprocess
  import sys
  from collections import defaultdict
  from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple, cast
  import click
  import wandb
  import wandb.docker
  from wandb import util
  from wandb.apis.internal import Api
  from wandb.errors import CommError
  from wandb.sdk.launch.errors import LaunchError
  from wandb.sdk.launch.git_reference import GitReference
  from wandb.sdk.launch.wandb_reference import WandbReference
  from wandb.sdk.wandb_config import Config
  from .builder.templates._wandb_bootstrap import FAILED_PACKAGES_POSTFIX, FAILED_PACKAGES_PREFIX
label_desc: Use image node_id 36 for calling a global function with example usage: pull_docker_image(docker_image) without return types