code: def test_get_docker_image() -> None:
      assert (
          LinuxContainer("test")._get_docker_image()
          == "029272617770.dkr.ecr.us-west-2.amazonaws.com/rayproject/citemp:unknown-test"
      )
  
imports: import sys
  import pytest
  from ci.ray_ci.linux_container import LinuxContainer
label_desc: Use image node_id 1 for calling a global function with example usage: test_get_docker_image() without return types