| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152 | version: "2"services:  vote:    build: ./vote    command: python app.py    volumes:     - ./vote:/app    ports:      - "5000:80"    networks:      - front-tier      - back-tier  result:    build: ./result    command: nodemon --debug server.js    volumes:      - ./result:/app    ports:      - "5001:80"      - "5858:5858"    networks:      - front-tier      - back-tier  worker:    build: ./worker    networks:      - back-tier  redis:    image: redis:alpine    container_name: redis    ports: ["6379"]    networks:      - back-tier  db:    image: postgres:9.4    container_name: db    volumes:      - "db-data:/var/lib/postgresql/data"    networks:      - back-tiervolumes:  db-data:networks:  front-tier:  back-tier:
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