first step to packaging in jenkins

Jenkinsfile

@@ -3,9 +3,16 @@ pipeline {
     stages{
         stage('unit test'){
             steps{
-                sh """
-tox -r
-"""
+                sh 'tox -r'
+            }
+        }
+        stage('packaging'){
+            steps{
+                script {
+                    if (env.BRANCH_NAME == 'master') {
+                        sh 'echo "AAAA"'
+                    }
+                }
             }
         }
     }