Playing with various technologies tonight. Managed to setup a brand new debian 12 systemd-nspawn container. Now looking through various documentation and other internet sources to combine it to a working #chatmail relay server. The thing is I only have a single IP address on the host system so I need to adapt it so the nginx running on the host either redirects or proxies to the container. Plus I guess I need to share the certificate in some way so postfix and dovecot can use it too.