I use CoreOS for about everything.It’s a secure and robust OS meant for containers. One challenge that I have had is my development environment. I started with CoreOS toolbox but there was an uncomfortable latency between starts. So I built a devbox project that created a docker container instance which I would connect to and then do my work. I could create more docker container instances or build applications and so on.The challenge is that in order to build my apps I needed my devbox container. Which pre-supposes that I could not CI/CD. Which I could not.Now I have constructed a sample project which documents how to use rkt to build an app and then a rkt container.