This is a Heroku buildpack that runs Caddy.
Example usage:
$ ls
Caddyfile
$ heroku create --buildpack http://github.com/twistly/heroku-buildpack-caddy.git
$ git push heroku master
...
-----> Heroku receiving push
-----> Fetching custom buildpack
-----> Caddy app detected
-----> Found a Caddyfile
The buildpack will detect that your app has a Caddyfile in the root and start caddy with that config file.
To build your Single page app, etc. please use another build pack before this one.