Web app with Custom UI but jitsi backend

I wanted to make a web app with minor changes in jitsi-meet so I jitsi-meet as base app and checked some code as per my requirements.
Now in the end I wanted to change server from https://alpha.jitsi.net to https://meet.jit.si.(using webpack.config.js)

But after changing it, it starts taking app.bundle from https://meet.jit.si.
Please help, I only want to change the server that is used for the conference.

meet.jit.si cannot be used with the webpack dev server, as it uses cdn to serve content and that has priority and bypasses the dev server proxy.