You beat me to it. While this looks like some fairly cool automation, the very first step is to create a bloody server.
But if you're already paying for the server, what's the point? I suppose you could host a lot more low-volume apps on one server?
I have a small droplet on digital ocean I use to host a few small personal projects. $5/month is pretty reasonable and if I don't want to sign up for AWS, this is a fairly beneficial thing to know about.
For people who want to use serverless functionality for cost benefit, it's probably not as helpful.