https://www.docker.com/sites/default/files/Docker_CheatSheet_08.09.2016_0.pdf

detach a container shell: `CTRL+p, CTRL+q`

attach a running container:

docker attach <container_name or id>

restart a stopped container:

docker start  `docker ps -q -l` # restart it in the background
docker attach `docker ps -q -l` # reattach the terminal & stdin