【jenkins】jenkinsfile更新作业描述的方法

String get_initial_description() {
    wrap([$class: 'BuildUser']) {
        def user = env.BUILD_USER_ID
        return "user: ${user}\n Number: ${env.BUILD_NUMBER}"
    }
}
// 获取初始化描述
currentBuild.description = get_initial_description()
// 追加描述内容
currentBuild.description = "${currentBuild.description}\nJOB: Working"