code: def test_image_not_found(self):
      if fiber.config.default_backend != "docker":
          pytest.skip("skipped because current backend is not docker")
  
      try:
          with pytest.raises(multiprocessing.ProcessError):
              fiber.init(
                  image="this-image-does-not-exist-and-is-only-used-for-testing"
              )
              p = fiber.Process(name="test_image_not_found")
              p.start()
      finally:
          fiber.reset()
  
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 the TestMisc obj's underlying member method code with example usage: obj.test_image_not_found() without return types