nginx cant access other services in docker compose stack

services:
  nginx:
    build:
      context: ./nginx
      dockerfile: Dockerfile
    depends_on:
      - frontend
      - provider
    networks:
      - frontend
      - dokploy-network
    ports:
      - 80

  frontend:...
    networks:
      - frontend
    ports:
      - 4321

  provider:...
    networks:
      - frontend
      - backend
    ports:
      - 3000

  database:...
    depends_on:
      postgres:
        condition: service_healthy
    networks:
      - frontend
      - backend

  postgres:...

networks:
  frontend:
  backend:
  dokploy-network:
    external: true