Here are some useful docker command :
1. to list container$ docker ps
2. to stop container$ docker stop myRedmine
3. to remove a container$ docker rm myRedmine
4. to list downloaded images$ docker image ls -a
5. to remove downloaded images$ docker image rm hello-world
6. Running into linux container'shell$ docker exec -i -t [container's name] /bin/bash
7. Copy file to the container$ docker cp file.tx [contqainer_id]:/[target_folder_and_filename]