Well from the Docker host you can still reach it. Now you just need to point to wireguard-lnd.
Since the lnd container is using the wireguard-lnd network stack, if it binds a port it's really binding it on the wireguard-lnd “container”.
So I had to adjust services (like Alby, lndg, ...) to point to wireguard-lnd instead. And to add it as an alternative domain name for the TLS in lnd.conf (that part you can see above).
wireguard-lnd.lndcontainer is using thewireguard-lndnetwork stack, if it binds a port it's really binding it on thewireguard-lnd“container”.wireguard-lndinstead. And to add it as an alternative domain name for the TLS in lnd.conf (that part you can see above).