code: def set_test_pip_version():
      os.environ["JINA_GATEWAY_IMAGE"] = "jinaai/jina:test-pip"
      yield
      del os.environ["JINA_GATEWAY_IMAGE"]
  
file_path: jina/tests/docker_compose/conftest.py
imports: import os
  import subprocess
  import time
  from typing import List
  import docker
  import pytest
  from jina.logging.logger import JinaLogger
label_desc: Use image node_id 5 for calling a global function with example usage: set_test_pip_version() without return types