URLs and the sync server?

[WarrenGandy]

Getting this up and running - it seems a lot of things have changed and documentation hasn't changed. I edited the docker compose file and changed most of the anysync image tags to "latest" which allowed things to run without error. I added a VPN IP address by using the 'echo >> .env.override line and I was able to set up two desktop clients with my server.

My issue is with adding a url and generating a new client.yml
file. How do I do that?
When I've tried to add lines like
EXTERNAL_DOMAIN=sync.example.com PUBLIC_URL=https://sync.example.com
to the .env.override file, they don't show up in the client.yml file (unless I'm just doing it wrongly).

Any suggestions?