version: "3.7" services: backend: build: backend ports: - 80:8080 environment: POSTGRES_DB: example networks: - spring-postges db: environment: POSTGRES_DB: example POSTGRES_PASSWORD_FILE: /run/secrets/db-password image: postgres restart: always secrets: - db-password volumes: - db-data:/var/lib/postgresql/data networks: - spring-postges volumes: db-data: {} secrets: db-password: file: db/password.txt networks: spring-postges: {}