setup: Install docker via Brewfile
setup: Install docker via Brewfile

On my system, I already had docker, and this seems harmless. It won't
re-install it or clobber what's currently there.

mvaled/sentry,mvaled/sentry,mvaled/sentry,beeftornado/sentry,beeftornado/sentry,beeftornado/sentry,mvaled/sentry,mvaled/sentry,mvaled/sentry