You probably get how to add an additional service with auto-http
## FAQ
### How small the small and cheap VM?
It can be the smallest instance. Half a virtual core and less than a GB of RAM will do. Caddy and Rathole are very efficient, and within normal operation, the VM has a CPU load of less than 1%
### Why Caddy on the cloud VM?
Certificate authorities require that the service that requests the cert runs in an IP related to a `A` or `AAAA` entry in an accessible DNS service. This is the way you prove that you "own" the service