code: def docker_config_image(self):
      ret_val = tfc.run(
          entry_point=os.path.join(
              self.test_data_path, "mnist_example_using_fit.py"
          ),
          requirements_txt=os.path.join(
              self.test_data_path, "requirements.txt"
          ),
          chief_config=tfc.COMMON_MACHINE_CONFIGS["P100_1X"],
      )
      return tfc.run(
          entry_point=os.path.join(
              self.test_data_path, "mnist_example_using_fit.py"
          ),
          requirements_txt=os.path.join(
              self.test_data_path, "requirements.txt"
          ),
          docker_config=tfc.DockerConfig(image=ret_val["docker_image"]),
          chief_config=tfc.COMMON_MACHINE_CONFIGS["P100_1X"],
      )
  
imports: import os
  import mock
  import tensorflow
  import tensorflow_cloud
  from tensorflow_cloud.utils import google_api_client
label_desc: Use image node_id 10 for calling the RunOnScriptTest obj's underlying member method code with example usage: obj.docker_config_image() and returns: tfc