version: "3.7" services: backend: build: backend secrets: - db-password ports: - 5000:5000 db: environment: MYSQL_DATABASE: example MYSQL_ROOT_PASSWORD_FILE: /run/secrets/db-password image: mysql:8.0.19 restart: always secrets: - db-password volumes: - db-data:/var/lib/mysql proxy: build: proxy ports: - 8080:80 volumes: db-data: {} secrets: db-password: file: db/password.txt