code: def is_inside_kubenetes_job():
      if os.environ.get("KUBERNETES_SERVICE_HOST", None):
          return True
      return False
  
file_path: fiber/fiber/backend.py
imports: import os
  import importlib
  import multiprocessing
  import fiber.config
label_desc: Use image node_id 1 for calling a global function with example usage: is_inside_kubenetes_job() and returns: False, True