import abc class RuntimeBuilder(abc.ABC): @abc.abstractmethod def build( self, path: str, tags: list[str], platform: str | None = None, extra_build_args: list[str] | None = None, ) -> str: """Build the runtime image. Args: path (str): The path to the runtime image's build directory. tags (list[str]): The tags to apply to the runtime image (e.g., ["repo:my-repo", "sha:my-sha"]). platform (str, optional): The target platform for the build. Defaults to None. extra_build_args (list[str], optional): Additional build arguments to pass to the builder. Defaults to None. Returns: str: The name:tag of the runtime image after build (e.g., "repo:sha"). This can be different from the tags input if the builder chooses to mutate the tags (e.g., adding a registry prefix). This should be used for subsequent use (e.g., `docker run`). Raises: AgentRuntimeBuildError: If the build failed. """ pass @abc.abstractmethod def image_exists(self, image_name: str, pull_from_repo: bool = True) -> bool: """Check if the runtime image exists. Args: image_name (str): The name of the runtime image (e.g., "repo:sha"). pull_from_repo (bool): Whether to pull from the remote repo if the image not present locally Returns: bool: Whether the runtime image exists. """ pass