Using dnsdock resolves the problem of the changing IP's of containers. It is much easier to start a named container and use dns on the host to access the container simply by its name.
sudo su -
cd
wget https://gist.githubusercontent.com/rguimaraens/6b9e57673170dff76ad4/raw/c2e799aca9593fe735d11845606dc9753ff86db7/etc-dnsdock.patch
cd /etc