How docker enable ssh connection

guys. I wanna set an ssh connection for my docker. Here are my steps.
My information:

Ubuntu:

1. pull docker

   docker pull citybrainchallenge/cbengine:0.1.1
   

2. go into the container, steps 2-5 are executed in the docker

   docker run -it citybrainchallenge/cbengine:0.1.1 bash
   

3. install dependencies

   apt-get update
   apt-get install passwd openssl openssh-server openssh-clients
   

4. change password

   passwd
   

5. set the configuration, remove #

   vim /etc/ssh/sshd_config
   

   PubkeyAuthentication yes 
   PermitRootLogin yes 
   Port 22 
   

6. save the container

   1. commit to a new container

   docker ps # check the container id 
   docker commit container_id new_image_id(I set: citybrainchallenge/cbengine:2.2)
   

7. run the new container and test it

   docker run -it citybrainchallenge/cbengine:2.2 bash
   

   In the container, restart ssh

   service restart ssh 
   service --status-all # check ssh is +
   

8. open a new terminal, Test its connection

   docker ps 
   docker port container_id 22
   

   However, it didn't work.