[xnyanta]

I'm not sure what you mean by "non-trivial" but here's a simple discord bot I wrote in python, that I distribute as an OCI image and that is built with Nix for both x86_64 and aarch64 linux via GitHub actions: https://github.com/starcraft66/attention-attention

There is no SBOM because I didn't bother publishing one but the way Nix builds derivations, you basically get the SBOM for free. You could use a tool like sbomnix[1] to trivially generate an SPDX-format SBOM from the nix derivation that builds the container image.

Edit: Since you mention swapping out base images, I think there is a misconception about how building images with Nix works. There is no such thing as a "Base" image, nix builds images from the Dockerfile equivalent of "scratch". You would ditch the Dockerfile completely and use only Nix to build the image.

1: https://github.com/tiiuae/sbomnix