rCDS is redpwn's CTF challenge deployment tool. It is designed to automate the entire challenge deployment process, taking sources from challenge authors and provisioning the necessary resources to both make challenges available on the competition scoreboard and to spin up Docker containers that the challenge needs to run.
rCDS has an opinionated model for managing CTF challenges. It operates on a centralized challenge repository and is designed to be run from a CI/CD system. This repository is the single source of truth for all data about challenges, and rCDS itself essentially acts as a tool to sync the state of various systems (the scoreboard and the container runtime) to what is described by this repository. Authors do not directly interface with any of these systems, and instead push their changes and let a CI job apply them. Thus, the challenge repository can be versioned, creating an audit log of all changes and allowing for point-in-time rollbacks of everything regarding a challenge should something go wrong.
For more information, see the documentation.