Update Jenkinsfile

Reviewed-on: #23

Jenkinsfile

@@ -0,0 +1,30 @@
+pipeline {
+    agent any
+
+    stages {
+        stage('Checkout') {
+            steps {
+                checkout scm
+            }
+        }
+
+        stage('Configure') {
+            steps {
+                sh '''
+                    mkdir -p build
+                    cd build
+                    cmake ..
+                '''
+            }
+        }
+
+        stage('Build') {
+            steps {
+                sh '''
+                    cd build
+                    make -j$(nproc)
+                '''
+            }
+        }
+    }
+}