Fix: use traefik-public network name

Match the existing Docker network name on Netcup.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -4,7 +4,7 @@ services:
     container_name: elle-o-elle
     restart: unless-stopped
     networks:
-      - traefik
+      - traefik-public
     labels:
       - "traefik.enable=true"
       - "traefik.http.routers.elle-o-elle.rule=Host(`elle-o-elle.lol`) || Host(`www.elle-o-elle.lol`)"
@@ -20,5 +20,5 @@ services:
       - "traefik.http.routers.elle-o-elle.middlewares=elle-www-redirect"
 
 networks:
-  traefik:
+  traefik-public:
     external: true