I am looking for some help/documentation on hosting Spire frontend on a server so that our QA team can access the storefront from their browser. I have tried to host it using Azure Web App without any success. I can build and run the Spire frontend locally using npm script and docker. It runs fine on localhost:3000. I don't know how to run it on a custom domain name so that I can run it on the server and connect from outside.