| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162 | version: '2'services:  sut:    build: ./tests/    depends_on:      - vote      - result      - worker    networks:      - front-tier  vote:    build: ../vote/    ports: ["80"]    depends_on:      - redis      - db    networks:      - front-tier      - back-tier  result:    build: .    ports: ["80"]    depends_on:      - redis      - db    networks:      - front-tier      - back-tier  worker:    build: ../worker/    depends_on:      - redis      - db    networks:      - back-tier  redis:    image: redis:alpine    networks:      - back-tier  db:    image: postgres:9.4    environment:      POSTGRES_USER: "postgres"      POSTGRES_PASSWORD: "postgres"    volumes:      - "db-data:/var/lib/postgresql/data"    networks:      - back-tiervolumes:  db-data:networks:  front-tier:  back-tier:
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