try block instead of a post

Jenkinsfile

@@ -14,9 +14,32 @@ node('master') {
 		echo "flag: ${params.cat}"
 		echo "flag: ${params.name}"
 	}
-	post {
-		always {
-			echo "this is printed always"
-		}
-	}
+
+
+	try {
+        stage('Test') {
+            sh 'echo "Fail!"; exit 1'
+        }
+        echo 'This will run only if successful'
+    } catch (e) {
+        echo 'This will run only if failed'
+
+        // Since we're catching the exception in order to report on it,
+        // we need to re-throw it, to ensure that the build is marked as failed
+        throw e
+    } finally {
+        def currentResult = currentBuild.result ?: 'SUCCESS'
+        if (currentResult == 'UNSTABLE') {
+            echo 'This will run only if the run was marked as unstable'
+        }
+
+        def previousResult = currentBuild.previousBuild?.result
+        if (previousResult != null && previousResult != currentResult) {
+            echo 'This will run only if the state of the Pipeline has changed'
+            echo 'For example, if the Pipeline was previously failing but is now successful'
+        }
+
+        echo 'This will always run'
+    }
+
 }