https://www.univention.com/blog-de/2015/11/release-of-ucs-4-1-with-docker-single-sign-on-mechanism-and-two-factor-authentication/
UCS 4.1 with Docker support, SSO + two-factor authentication
Mar 7, 2017 - Release von UCS 4.1 brings integration of Docker, single sign-on, two-factor authentication and self services for a password reset.
docker supportucsssotwofactor