Build docker images "derived" from NixOS module?

[shaniag]

Update: I found this older post, which is also what I am looking for:

Convert NixOS configuration into an image?

So we have nixos-container for generating a chroot container, pkgs.dockerTools.buildImage for building a Docker image with Nix expression, but is it possible to build an image with NixOS’s configuration? For example, I was reading about services.vikunja, this configuration is well written, and to translate this into a docker image manually takes some work. I will be awesome if we can use that to create a docker image right away. Not only would this make a deployment with Docker easy, and those…

@augu5te I saw you commented on this topic with a few options, but I don’t think any of these tools really meet my expectations. What would you do for my given scenario? Just manually reproduce the necessary module options for the docker image, or is there some kind of new tool specifically for this usecase?