It may be simple for you to do, but you just described having to provision a server, manually checkout your code using SSH agent forwarding or HTTPS auth, setup

It may be simple for you to do, but you just described having to provision a server, manually checkout your code using SSH agent forwarding or HTTPS auth, setup your environment variables, and then launch the app. And manually repeat the last steps as many times as you push to your branch. At this point you’re the only one to know about your preview server, and you need to not forget to destroy it when you’re done. PullPreview handles all of the synchronisation mechanism, as well as providing pretty URLs, automated SSH access to any GutHub users, source IP filtering, port firewalling, HTTPS support etc. Plus the whole integration into GitHub so that you don’t need to retrieve the preview URL by yourself, and you get notified if anything goes wrong during the deploy, with full logs available. That’s the gap we’re trying to fill :)