I asked about this a few months ago on here and was pointed to this: https://grahamc.com/blog/nix-and-layered-docker-images https://grahamc.com/blog/nix-and-la

I asked about this a few months ago on here and was pointed to this: https://grahamc.com/blog/nix-and-layered-docker-images https://grahamc.com/blog/nix-and-layered-docker-images It's far from a native solution, and is a bit hacky due to the 256 layer limitation in docker, but it's most of the way to what you want, I think.