You'll need WSL2 with ubuntu 2004. Getting Terminal as per the linked page works well.
Then install Docker on the WSL Ubuntu environment but test the install differently.
Instead of using
sudo systemctl start docker use
sudo /etc/init.d/docker start, as (of right now we do not have systemd in WSL 2.)[https://github.com/MicrosoftDocs/WSL/issues/457]