code: def dummy_q_worker(q):
      q.put("DUMMY_WORKER_DONE")
      time.sleep(0.1)
  
imports: import re
  import io
  import os
  import logging
  import glob
  import fiber
  import fiber.config
  from fiber.docker_backend import Backend
  import time
  import pytest
  import multiprocessing
  from unittest import mock
  import fiber.config
label_desc: Use image node_id 4 for calling a global function with example usage: dummy_q_worker(q) without return types