code: def is_docker_still_running(container_name):
      """Returns whether given Docker container is still running."""
      return bool(get_id_of_running_docker(container_name))
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from builtins import int
  import argparse
  import json
  import logging
  import os
  import random
  import shutil
  import subprocess
  import time
  import uuid
  from six import iteritems
  import eval_lib
  from cleverhans.utils import shell_call
label_desc: Use image node_id 4 for calling a global function with example usage: is_docker_still_running(container_name) and returns: bool