Docker for Windows Proxy with WSL2

I’m experimenting with Docker for Windows using WSL2 and had a question about the Proxy settings in the application are for. Even though I have configured those settings I still need to add my proxy information to ‘~/.docker/config.json’ for my containers to have access to the internet.

Is this by design, or am I doing something wrong? What are the proxy settings in the Windows application for?

Thank you,