I tried to search some web page and found they teach you have to install windows docker desktop.
I confuse about it , because MS said WSL2 is based on Linux Core so it should not need windows desktop theoretically.
Docker Desktop WSL 2 backend | Docker Documentation said it need docker desktop but i can install and build docker in WSL2 with this script and there's no windows docker desktop.
$ curl -fsSL https://get.docker.com -o get-docker.sh
$ sudo sh get-docker.sh
$ sudo service docker start