Ubuntu!
SchoolTool also started 20 years ago. Then Open edX, and it looks like e.g. Canvas for LMS these days.
To run an Ubuntu container with podman:
apt-get install -y podman distrobox
podman run --rm --it docker.io/ubuntu:24.04 bash --login
podman run --rm --it docker.io/ubuntu:24.10 bash --login
GitHub Codespaces are Ubuntu devcontainers (codespaces-linux)Windows Subsystem for Linux (WSL) installs Ubuntu (otherwise there's GitBash and podman-desktop for over there)
The jupyter/docker-stacks containers build FROM Ubuntu:24.04 LTS: https://github.com/jupyter/docker-stacks/blob/main/images/do... :
docker run -p 10000:8888 quay.io/jupyter/scipy-notebook:2024-10-07