Add websecure entrypoint label to nginx-mailcow

docker-compose.override.yml

@@ -12,6 +12,7 @@ services:
       labels:
         - traefik.enable=true
         - traefik.docker.network=proxy
+        - traefik.http.routers.mail.entrypoints=websecure
         - traefik.http.routers.mail.rule=Host(`${MAILCOW_HOSTNAME}`)
         - "co.elastic.logs/module=nginx"
         - "co.elastic.logs/fileset=access"