This is a new repository that replaces a pre-existing nvidia-container-runtime repository that we've been using since 20.04 that does the same thing. It still remains that tensorman would not function without NVIDIA docker container support, because it's literally just a convenient frontend for interacting with Docker's CLI.

I never said otherwise. As you know, nvidia-containter-toolkit only very recently merged with nvidia-docker, and you know perfectly well that you have not always packaged or supported nvidia-docker.