I think support for Shibboleth was added on Aug 28, 2014, but it has been improved since then, see <a href="http:&#x2F;&#x2F;doc.gitlab.com&#x2F;ce&#x2F;integration&#x2F;shibboleth.html" rel="nofollow">http:&#x2F;&#x2F;doc.gitlab.com&#x2F;ce&#x2F;integration&#x2F;shibboleth.html</a>