Add Docker commands to tutorial (fixes #792)

[JLKwong]

Fixes #792

Description

Added the docker start and docker stop commands to the list of common commands in the Docker tutorial (changes are bolded):

A few common Docker CLI commands you might need for working with treehouses are:

• docker start <container-id> – start one or multiple stopped containers
• docker stop <container-id> - stop one or multiple running containers
• docker ps – show running containers
• docker ps -a - show all containers
• docker logs <container-id> -f - follow the log output of a container
• docker images – list images

Raw.Githack preview link

https://raw.githack.com/JLKwong/JLKwong.github.io/792-Add-Docker-Commands/#!pages/vi/dockertutorial.md

[dogi]

@JLKwong looks like this was wrong branch ....

[JLKwong]

@JLKwong looks like this was wrong branch ....

Oh my gosh. 😂 I'll undo the wrong branch and push the right one. Thank you for pointing this out.

[JLKwong]

@dogi I reverted the changes from the wrong branch.