We now have instructions in our Unix installs about setting up docker group to avoid sudo. Also, Mac/Windows shouldn't use sudo. So, I've removed sudo from our examples and added a section at the top reminding them that if they have to use sudo to run docker they can change that. Signed-off-by: Mary Anthony <mary@docker.com> Upstream-commit: a4609a1dfbcfb2fea10aa2be15124e0809528d04 Component: engine