3 points
The person is correct in this isn’t a Linux problem, but relates to your experience.
Windows worked by giving everyone full permissions and opening every port. While Microsoft has tried to roll that back the administration effort goes into restricting access.
Linux works on the opposite principle, you have to learn how to grant access to users and expose ports.
You would have to learn this mental switch no matter what Linux task your trying to learn
Dockers guide to setting up a headless docker is copy/paste. You can install Docker Desktop on Linux and the effort is identical to windows. The only missing step is
sudo usermod -aG docker $user
To ensure your user can access the docker host as a local user.
