Ha! I did this but the containers end up being somewhat large since you have all the NixOS package stuff in the container too. However, building the container

Ha! I did this but the containers end up being somewhat large since you have all the NixOS package stuff in the container too. However, building the container from a configuration.nix file gives you exactly what you need in the container and nothing more. It's like basing your container from scratch in a Dockerfile and copying only the needed compiled dependencies and nothing more into the container.