This repo is made up of nested directories. Each successive directory devlops the idea a step further.

Each directory contains a brief readme.txt to explain what's going on at that level. There's an _.txt containing the commands you need to run that level.

Other than that, you'll find a main.go and usually a Dockerfile.

For levels that rely on the scratch image, there's also a filesystem.sh that exports the container filesystem for you into a directory called export. To get a quick listing of the filesystem, try a ls -lRh export.

The slides for the talk are available online, along with an accompanying blog post. The built image can be found on Docker Hub and the complete repo is available on Github. It's made up of four files, including the readme, which I think is deliciously simple.