Start9's implementation of nostr:npub155m2k8ml8sqn8w4dhh689vdv0t2twa8dgvkpnzfggxf4wfughjsq2cdcvg can only be accessed via the local LAN or TOR. But, let's say you want your BTCPay server to be accessible by the outside world for payments or your online store.

Have no fear, socator is here!

The socator Docker container uses socat to listen on a given TCP port and redirects incoming traffic to a TOR hidden service. All you need in a simple nginx reverse proxy to make it all work. Boom.