This is really awesome! I looked quickly at your self-hosting guide and I was wondering is the only option to deploy the static website Google Cloud Storage? I would like to setup webhook on a Heroku with free-tier dynos and deploy to AWS because those are the services I already use and love. If it's not possible, do you think I could fork your project and integrate AWS deployment somewhat easily?
The reason we went with GCS is because AWS limits you to 100 static sites (buckets). That's a block for our hosted solution.
The code is MIT, so do with it what you want. May be a little bit more complicated then just switching out the build layer, but if you can get something working that's configurable, feel free to send in a PR.