add Jenkinsfile for automated testing

Jenkinsfile

@@ -0,0 +1,23 @@
+pipeline {
+    agent any
+
+    stages {
+        stage('Checkout') {
+            steps {
+                git url: 'http://10.1.1.1:3000/hasslesstech/shmuliar-sp-kr-lab4.git'
+            }
+        }
+        
+        stage('Build') {
+            steps {
+                sh 'make -j$(nproc) test'
+            }
+        }
+
+        stage('Test') {
+            steps {
+                sh './tester'
+            }
+        }
+    }
+}