services: backend: build: context: backend target: dev-envs ports: - 8080:8080 environment: - POSTGRES_DB=example networks: - spring-postgres volumes: - /var/run/docker.sock:/var/run/docker.sock db: image: postgres restart: always secrets: - db-password volumes: - db-data:/var/lib/postgresql/data networks: - spring-postgres environment: - POSTGRES_DB=example - POSTGRES_PASSWORD_FILE=/run/secrets/db-password expose: - 5432 volumes: db-data: secrets: db-password: file: db/password.txt networks: spring-postgres: