def get_random_name(sep: str='-'):
    """
    Generate random docker-like name with the given separator.

    :param sep: adjective-name separator string
    :return: random docker-like name
    """
    r = random.SystemRandom()
    return '{}{}{}'.format(r.choice(_left), sep, r.choice(_right))
Generate random docker-like name with the given separator.

    :param sep: adjective-name separator string
    :return: random docker-like name