add jenkinsfile

asset_jenkinsfile.js

@@ -0,0 +1,26 @@
+'use strict';
+
+module.exports = `pipeline {
+  agent any
+
+  environment {
+      VERSION = VersionNumber([
+          versionNumberString:
+              '\${BUILDS_ALL_TIME}',
+          versionPrefix: '1.0.',
+          worstResultForIncrement: 'SUCCESS'
+      ])
+  }
+
+  stages {
+      stage('Building') {
+          steps {
+              script {
+                  currentBuild.displayName = env.VERSION
+              }
+              sh 'yarn ci \${VERSION}'
+          }
+      }
+  }
+}
+`;

index.js

@@ -1,8 +1,9 @@
 'use strict';
 
 const jenkins = require ('./asset_jenkins');
+const jenkinsfile = require ('./asset_jenkinsfile');
 
-const files = { jenkins };
+const files = { jenkins, jenkinsfile };
 
 const scripts = {
   lint:    'eslint . --ext .js,.jsx,.ts,.tsx,.vue,.mjs',