I have Rancher Desktop 1.5.1 running on a MacBook Pro. How do I configure Rancher Desktop to use my corporate proxy servers. Currently if I run "docker pull alpine" I get the timeout error trying to connect to docker.io.

I believe that at present using a proxy server with RD is not supported. However, we are aware that this is something that a lot of users need, and are working on it. https://github.com/rancher-sandbox/rancher-desktop/issues/897 is one of the relevant issues but from the looks of it there are multiple pieces to it - it's a complex thing.

lots of issues open in https://github.com/rancher-sandbox/rancher-desktop/issues?q=is%3Aissue+is%3Aopen+label%3Aarea%2Fproxy+. On macOS the override.yaml method has been pretty solid. On Windows I have found WSLENV to cause confusion in Kubernetes because of the lack of no_proxy management.