Add a Jenkinsfile (#17)

Add Jenkinsfile

Jenkinsfile

@@ -0,0 +1,20 @@
+pipeline {
+    agent any
+    stages {
+        stage('Build') {
+            steps {
+                checkout([
+                    $class: 'GitSCM',
+                    branches: [[name: '**']],
+                    doGenerateSubmoduleConfigurations: false,
+                    extensions: [[$class: 'CleanBeforeCheckout']],
+                    submoduleCfg: [],
+                    userRemoteConfigs: [[credentialsId: 'github-kemitix', url: 'git@github.com:kemitix/mon.git']]
+                ])
+                sh './mvnw clean install'
+                junit '**/target/surefire-reports/*.xml'
+                archiveArtifacts '**/target/*.jar'
+            }
+        }
+    }
+}