We briefly explain some commonly used commands. If you want to know all commands in Docker, you can go to the docker command line page
When you forget the commands, you can use this command to know the detail information.
$ sudo docker run --help
$ sudo docker images
Show Running Container
$ sudo docker ps
Show All container
$ sudo docker ps -a
$ sudo docker run -i -t images(imageid or <repository:tag>
For instacne, you want to run a container with ubuntu 14.04 system
$ sudo docker run -i -t <ubuntu:14.04>
If you want to quit the container (not stopping it), you just click Ctrl + P and Ctrl + C