code: def docker_build_push(tag, branch):
      bash_command = f"./scripts/docker_build_push.sh {tag}"
      result = subprocess.run(
          bash_command,
          shell=True,
          capture_output=True,
          text=True,
          env={
              "TEST_ENV": "true",
              "GITHUB_REF": f"refs/heads/{branch}",
          },
      )
      return result
  
imports: import subprocess
label_desc: Use image node_id 2 for calling the BashMock obj's underlying member method code with example usage: obj.docker_build_push(tag, branch) and returns: result