version: "3.7" services: backend: build: backend db: environment: MYSQL_DATABASE: example MYSQL_ROOT_PASSWORD_FILE: /run/secrets/db-password image: mysql:5.7 restart: always secrets: - db-password volumes: - db-data:/var/lib/mysql frontend: build: frontend ports: - 80:9000 volumes: - ./frontend:/project - /project/node_modules volumes: db-data: {} secrets: db-password: file: db/password.txt