[3np]

Surprisingly enough, if your primary motivation for doing this is to save system resources, it might be misguided. ubuntu-base docker images are slimmer than contemporary debian slim, even, though debian seems to have been closing the gap recently - I recall the discrepancy as larger. Below shows image sizes in MB as of today:

  docker.io/debian:bullseye         123.4
  docker.io/debian:bookworm         115.7
  docker.io/debian:bullseye-slim    80.1
  docker.io/ubuntu:22.04            76.6
  docker.io/debian:bookworm-slim    74.2
  docker.io/ubuntu:23.04            69.4

This is specific to docker images, while default ubuntu server or desktop releases are otherwise very much a bloat-fest compared to debian.