Add an example of how to add your client IP to the container hosts file

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Merge pull request #9227 from SvenDowideit/add-client-ip-to-hosts

Add an example of how to add your client IP to the container hosts file