Proper way to install Docker

I need to install Docker on Ubuntu 22.04 LTS to run Open Drone Map, which has dropped support for their "snap" release.

The Ubuntu Store will install Docker, but the Docker it installs (Docker version 24.0.4) needs the Docker daemon. That apparently isn't installed, or isn't running.

I tried to start it, using

sudo systemctl start docker

But that got "Unit docker.service not found"

Does the Ubuntu Store version work? Or should that just be removed, and the complicated instructions on the Docker web site followed?