def METHOD_NAME(cls) -> str:
    # Get the default image tag. Instead of hardcoding, we give a choice to set the default image tag
    # in the sky's user-config file. (if not specified, use the hardcode one at last)
    return skypilot_config.get_nested(
        ("oci", "default", "image_tag_general"), "skypilot:cpu-ubuntu-2004")