Fix traefik network for nginx container

Author: hg1g

compose.login-hanko.yaml

@@ -74,6 +74,7 @@ services:
       - "traefik.http.routers.export-tool.entrypoints=websecure"
       - "traefik.http.routers.export-tool.tls.certresolver=letsencrypt"
       - "traefik.http.services.export-tool.loadbalancer.server.port=80"
+      - "traefik.docker.network=hotosm-test"
 
   worker:
     image: ghcr.io/hotosm/osm-export-tool/app:login-hanko