services:
  redis:
    image: redis:7-alpine
    container_name: redis
    ports:
      - "6379:6379"
    restart: always

  app1:
    build: .
    restart: always
    environment:
      - INSTANCE=app1
      - REDIS_URL=redis://redis:6379
    depends_on:
      - redis

  app2:
    build: .
    restart: always
    environment:  
      - INSTANCE=app2
      - REDIS_URL=redis://redis:6379
    depends_on:
      - redis

  app3:
    build: .
    restart: always
    environment:
      - INSTANCE=app3
      - REDIS_URL=redis://redis:6379
    depends_on:
      - redis

  app4:
    build: .
    restart: always
    environment:
      - INSTANCE=app4
      - REDIS_URL=redis://redis:6379
    depends_on:
      - redis

  nginx:
    image: nginx:latest
    container_name: nginx
    ports:
      - "8080:80"
    volumes:
      - ./nginx/nginx.conf:/etc/nginx/conf.d/default.conf
    depends_on:
      - app1
      - app2
      - app3
      - app4