import re


def is_valid_zcs_container_id(zcs_container_id):
    """
    Validates Zadara Container Services (ZCS) container IDs, also known as the
    ZCS container "name".  A valid ZCS container name should look like:
    container-00000001 - It should always start with "container-" and end with
    8 hexadecimal characters in lower case.

    :type zcs_container_id: str
    :param zcs_container_id: The ZCS container name to be validated.

    :rtype: bool
    :return: True or False depending on whether zcs_container_id passes
        validation.
    """
    if zcs_container_id is None:
        return False

    match = re.match(r'^container-[0-9a-f]{8}$', zcs_container_id)

    if not match:
        return False

    return True