$ docker ps
$ docker ps [-a]
$ docker images
$ docker pull ubuntu
$ docker [container_id or container_name] start/stop/restart
$ docker run [image_id or image_name] -it /bin/bash -v [name_a:name_b]
#for login to system
$ docker exec -it [comtainer id or name] /bin/bash
$ roscore
$ roslaunch rosbridge_server rosbridge_websocket.launch bson-only-mode:=True
$ rosrun image_combine node
$ npm start