For a more modern iteration of that idea, check out https://github.com/nlewo/nix2container https://github.com/nlewo/nix2container It has all the benefits of OP

For a more modern iteration of that idea, check out https://github.com/nlewo/nix2container https://github.com/nlewo/nix2container It has all the benefits of OP but produces the images much faster, and with less on-disk usage.