We might do well to add to the script a more in-depth explanation of why elevated privileges are needed. We did take care to not run the whole script as sudo, but only parts of it (always read a script before giving it privileges!).

So elevated privileges are needed because we're installing using Docker Compose and you can't use Docker without some form of elevated privileges (most people always run it with sudo). MacOS is a slightly different story, but anyway.

The reason we use Docker Compose is because we need to not only deploy Mathesar, but also a Postgres database (if you're not using your own), and we want maximally simple installs and in-app upgrading (upgrading is implemented via Watchtower, which is basically fancy docker pulls with automatic container restarts).