version: '2' services: sut: build: ./tests/ depends_on: - voting-app - result-app - worker networks: - front-tier voting-app: build: ../voting-app/ ports: ["80"] depends_on: - redis - db networks: - front-tier - back-tier result-app: 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 ports: ["6379"] networks: - back-tier db: image: postgres:9.4 volumes: - "db-data:/var/lib/postgresql/data" networks: - back-tier volumes: db-data: networks: front-tier: back-tier: