variables: main_domain: ${domain} mysql_password: ${password} mysql_root_password: ${password} admin_password: ${password} config: domains: - serviceName: yourls-app port: 80 host: ${main_domain} env: YOURLS_HOST: ${main_domain} YOURLS_ADMIN_USER: "admin" YOURLS_ADMIN_PASSWORD: ${admin_password} MYSQL_PASSWORD: ${mysql_password} MYSQL_ROOT_PASSWORD: ${mysql_root_password} mounts: []