I actually filmed a video tutorial for a project I’m working on. This is meant to help someone go from nothing to being able to use all of the work we’ve done so far. Setting Up Docker for Windows Watch from 2:12 until around 4:20.
This might not be exactly what you need, but it works for our use case. Typing “ipconfig” in the powershell will show you that the external network isn’t even recognized by the computer, while typing ip addr inside the container will display it correctly. This means only your containers are using the network that adapter is connected to.