I have an app with a sperate backend and frontend. The backend tests are running in Travis, as a part of those tests, I’m using selenium in order to test the frontend against the backend. While running locally both apps are running on localhost (with different ports). But I’m not sure how to connect them when running in Travis that only has access to the Backend code. I already have a different server that is running my frontend in “test” mode. But I don’t know with URL should I set in order to connect it to the backend that is running in Travis.