docs(docker): Consistencize all domains to example.com and port to 8008

Included some additional comments. .well-known Delegation seems to be
much more convenient for traefik + caddy. How they're documented can be
decided in a future commit.

docs/deploying/docker.mdx

@@ -197,6 +197,8 @@ docker network create caddy
 
 ```
 
+You will then need to point your reverse proxy towards Continuwuity at `127.0.0.1:8008`
+
 </details>
 
 #### Override file for customisation