rkt is the next-generation container manager for Linux clusters with an emphasis on security, simplicity and composability with modern cluster architectures. What kind of tasks involve hacking on rkt? How do we develop and run tests? How do we work with related projects? How do we stay current on such fast-moving technology? In sum, what is it like to develop a container runtime? We’ll answer these and other questions in this talk. Things have not always been and will not always be as they are now. Thus, the talk will cover how things have changed for the project over time. The aim of the talk is to familiarize more people with the rkt development process and to get input from the community on how to improve it. In that spirit, Iago encourages attendees to bring questions and start a discussion.