Information
http://blog.docker.com/2014/06/why-you-dont-need-to-run-sshd-in-docker/
Solution
Uninstall SSH server from the container and use nsenter or any other commands such as docker exec or docker attach to interact with the container instance.
docker exec --interactive --tty $INSTANCE_ID sh
OR
docker attach $INSTANCE_ID
Impact-
None.
Default Value-
By default, SSH server is not running inside the container. Only one process per container is allowed.