Comment 16 for bug 1926758

> I do have that set though:
>(undercloud) [stack@undercloud-0 tht]$ openstack stack environment show overcloud |grep -A2 >DockerIns
> DockerInsecureRegistryAddress:
> - undercloud-0.ctlplane.bgp.ftw:8787

Actually undercloud registry is not used for image parameters unless you've ContainerImagePrepare parameter in an environment with 'push_destination: true'[1] in spite of undercloud registry being configured.

[1] https://github.com/openstack/tripleo-common/blob/master/tripleo_common/image/kolla_builder.py#L382