While I've managed to run and do a bit of hacking around the edge of Docker containers up until now, I am starting to put all the pieces together in my understanding.

I'm still not an expert or fully adept, but I was able to figure out storage bits -- how to look up things like persistent volumes, what they are used for and where they actually live.

I also well understand images now, each new change forming one "layer" which allows you to build up whatever you want underneath. Lastly I get how the image is akin to an AWS AMI, which is used as a template to build a container, which is similar to an EC2 instance.

What's still on the TODO then? I think building a non trivial container that does something should be up first, and next getting the building of an image happening in an automated fashion. Maybe even a deployment to an Internet facing server.