A short little list of commands I have found myself using for Docker.
To console into a running container
docker exec -it d799b74e3289 /bin/bash
To view containers
docker ps -a (view all containers)
To build a new image
docker build -it -p 80:80 imagename:0.1 (where 0.1 is the tag)
docker rmi xxxxxxx (xxxxxxx is the image name)