An amusing gotcha I found with docker was how do I convince the servers I communicate with from in the container that I am me? Best bet was to map my user into the user on the container, but that was actually ridiculously fraught with trouble. (There is a chance this has since been fixed...)
QubeOS adopted the "manual authentication" method (of having to confirm everything, such as clipboard copy/paste).
This is probably not quite scalable (not to mention annoying). May be there's some way to have a short session token, so during a work session of a few hours, it works without any intervention.