It’s intended to wait quietly in the background and is triggered via a webhook that’s fired when you push to your GitHub Pages blog.
Full instructions and source code are on the webhook-mentions GitHub repository.
It was inspired in part by Pelle Wessman’s webpage-micropub-to-github project that acts as a Micropub gateway for your GitHub Pages blog. I wanted to provide a way for those with static blogs to use another key IndieWeb technology.
It was my first time using the incredibly easy-to-use Heroku Button which makes it simple to set up your own instance of a little app like this. Recommended.