Add Jenkinsfile for Jenkins integration for python-calculator

Author: markusewalker

python-calculator/Jenkinsfile

@@ -0,0 +1,10 @@
+pipeline {
+    agent any 
+    stages {
+        stage('Run Unit Tests') {
+            steps {
+                sh 'python3 unittest calculator_unittest.py'
+            }
+        }
+    }
+}