Add documents for sub commands of docker #6
Description
- attach
- build
- checkpoint
- commit
- config
- container
- cp
- create
- deploy
- diff
- events
- exec
- export
- history
- image
- images
- import
- info
- inspect
- kill
- load
- login
- logout
- logs
- network
- node
- pause
- plugin
- port
- ps
- pull
- push
- rename
- restart
- rm
- rmi
- run
- save
- search
- secret
- service
- stack
- start
- stats
- stop
- swarm
- system
- tag
- top
- trust
- unpause
- update
- version
- volume
- wait