Without adding the user to the group you're going to hit nasty TLS errors. Figured I'd save the next guy the hassle. Problem more accurately described here: https://github.com/docker/docker/issues/5314 Signed-off-by: Jason Divock <jdivock@box.com> Upstream-commit: 25d07511ed63959777ab1d0bee9f8e5f79382318 Component: engine