Also make sure we copy the joining containers hosts and resolv.conf with the hostname if we are joining it's network stack. Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael) Upstream-commit: 0b187b909be1dac60194250bc6e9ff292a0bd5c9 Component: engine