devcontainers

Meet the devcontainer.json spec

            {
                "name": "Debian w/ Ruby",
                "image": "mcr.microsoft.com/devcontainers/base:bullseye",
                "features": {
                    "ghcr.io/devcontainers/features/ruby:1": {
                        "version": "3.1"
                    }
                }
            }