debrief: what happens when we run a container

• looks for image locally
• if not locally pulls to from repo (default docker hub)
• downloads latest version by default
• creates new container
• gives a virt ip on private network inside docker engine
• opens up port 80 on host and forwards to port 80 in container
• starts container using the CMD in the image dockerfile

docker container run --publish 8080:80 --name webhost -d nginx:1.11 nginx -T

• change host listening port to 8080
• change version of image to 1.11
• change CMD run on start with -T