Based on caddy-gen
This will start a reverse proxy on port 80 and 443, which proxies
to the plausible container. Note that it will clash with any
existing reverse proxies on the host machine
This is done in preparation for adding reverse-proxy configurations
Unfortunately a later docker-compose file cannot *remove* a port
binding, so it has to be removed in the root file.
If there is interest, the 80:8000 binding can be re-added in a
new docker-compose overwrite file.