Recently I worked on a project where a large refactor had taken place but I wanted to ensure that there was no changes to the built output of the docker container. So while the diff in Github was quite large with many files moved around the output should remain almost identical aside from a few extra files removed.

This post covers how to setup CoreOS with iptables on DigitalOcean. It also covers how to start a Docker container using systemd to keep the container running after crashes and reboots.