diff --git a/Jenkinsfile b/Jenkinsfile
index ab9a205..c1b32e2 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,33 +1,37 @@
-pipeline {
-  agent any
-  options { timeout(time: 60, unit: 'SECONDS') }
-  stages {
-    stage('Checkout and identify change') {
-      steps {
+properties([
+  disableConcurrentBuilds(),
+  buildDiscarder(logRotator(daysToKeepStr: '60', numToKeepStr: '60', artifactDaysToKeepStr: '15', artifactNumToKeepStr: '15'))
+])
+
+timeout(time: 60, unit: 'SECONDS') {
+  node {
+    try {
+      stage('检出与变更信息') {
         checkout scm
         echo "BRANCH_NAME=${env.BRANCH_NAME ?: ''}"
         echo "CHANGE_ID=${env.CHANGE_ID ?: ''}"
         echo "CHANGE_TARGET=${env.CHANGE_TARGET ?: ''}"
-        script {
-          def scenario = readFile('ci/scenario.txt').trim()
-          if (!(scenario in ['success', 'unstable', 'failure'])) {
-            error("Unsupported demo scenario: ${scenario}")
-          }
-          env.SCENARIO = scenario
+        def scenario = readFile('ci/scenario.txt').trim()
+        if (!(scenario in ['success', 'unstable', 'failure'])) {
+          error("Unsupported demo scenario: ${scenario}")
         }
+        env.SCENARIO = scenario
+        env.RUN_SECONDS = '1'
+        env.LOG_LINES = '25'
+        env.TARGET_ENV = 'sg'
+        env.RELEASE_VERSION = readFile('VERSION').trim()
+        def expected = [success: 'SUCCESS', unstable: 'UNSTABLE', failure: 'FAILURE'][scenario]
+        currentBuild.description = '[演示数据] synthetic=true expected=' + expected
+      }
+      stage('构建与报告') {
+        int status = sh(returnStatus: true, script: 'sh ci/demo-build.sh')
+        junit 'reports/*.xml'
+        if (status != 0) error("Demo build exited with status ${status}")
+      }
+    } finally {
+      stage('归档') {
+        archiveArtifacts artifacts: 'artifacts/*', allowEmptyArchive: true
       }
     }
-    stage('Build and report') {
-      steps {
-        script {
-          int status = sh(script: 'sh ci/demo-build.sh', returnStatus: true)
-          junit 'reports/*.xml'
-          if (status != 0) error("Demo build exited with status ${status}")
-        }
-      }
-    }
-  }
-  post {
-    always { archiveArtifacts artifacts: 'artifacts/*', allowEmptyArchive: true }
   }
 }