Remove host port publish to fix Dokploy bind conflict

Co-authored-by: Cursor <cursoragent@cursor.com>

docker-compose.yml

@@ -10,8 +10,7 @@ services:
         condition: service_healthy
     expose:
       - "20000"
-    ports:
-      - "${PANEL_PORT:-20000}:20000"
+    # No host ports — Dokploy/Traefik routes via dokploy-network (avoids "port already allocated")
     environment:
       APP_NAME: ${APP_NAME:-VpnPanel}
       SECRET_KEY: ${SECRET_KEY:-change-me-to-a-long-random-string}