When you install Docker desktop and already have wsl2 installed you get a pop up saying “you just want us to use wsl2?” And away you go. At least that’s what happened when I did it 6 months ago. Works great!
If you don't need to run `docker` command under Windows, install docker directly from distro repo is enough. No need to run another background service. Another benefit is it is faster to build docker images when the files are large, because it doesn't need to move files between WSL VMs.