version: '3' services: php: image: yiisoftware/yii2-php:7.3-apache volumes: - ~/.composer-docker/cache:/root/.composer/cache:delegated - ./:/app:delegated ports: - '8000:80' links: - mariadb mariadb: image: mariadb:10.1 volumes: - mariadb:/var/lib/mysql environment: TZ: "Europe/Berlin" MYSQL_ALLOW_EMPTY_PASSWORD: "no" MYSQL_ROOT_PASSWORD: "rootpw" MYSQL_USER: 'testuser' MYSQL_PASSWORD: 'testpassword' MYSQL_DATABASE: 'testdb' volumes: mariadb: