def container_backend()

in scripts/utils.py [0:0]

• 14 lines of code
• 5 McCabe index (conditional complexity)

def container_backend() -> tuple[Command, dict[str, str]]:
    """
    Try to detect a container backend.
    Either podman or docker.

    Returns:
        a command if a backend is detected.
    Raises:
        CommandNotFound: if a suitable backend can't be found.
    """
    cmd = None
    env = os.environ.copy()
    for backend in ["docker", "podman"]:
        try:
            cmd = Command(backend)
        except CommandNotFound:
            continue
        if "podman" == backend:
            env["BUILDAH_FORMAT"] = "docker"
        break

    if not cmd:
        raise CommandNotFound("Unable to find a suitable backend: docker or podman")
    return cmd, env