class_docstr: Container for building and publishing anyscale docker images
code: def _get_requirement_file(self) -> str:
      prefix = (
          "requirements"
          if self.image_type == "ray"
          else "requirements_ml"
      )
      postfix = self.python_version
  
      return f"{prefix}_byod_{postfix}.txt"
  
imports: from ci.ray_ci.docker_container import DockerContainer
  from ci.ray_ci.container import _DOCKER_ECR_REPO, _DOCKER_GCP_REGISTRY
label_desc: Use image node_id 3 for calling the AnyscaleDockerContainer obj's underlying member method code with example usage: obj._get_requirement_file() and returns: prefix, str, postfix, str