added scripts

Jenkinsfile

@@ -2,10 +2,26 @@ pipeline {
     agent any
 
     stages {
-        stage('Do nothing') {
+        stage('Environment') {
             steps {
-                sh '/bin/true'
+                sh 'git --version'
+                sh 'printenv'
+            }
+        }
+        stage('Build Frontend') {
+            steps {
+                sh './jenkins/buildFrontend.sh'
+            }
+        }
+        stage('Deploy Backend') {
+            steps {
+                sh './jenkins/deployBackend.sh'
+            }
+        }
+        stage('Deploy Frontend') {
+            steps {
+                sh './jenkins/deployFrontend.sh'
             }
         }
     }
-}
+}

jenkins/buildFrontend.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env sh
+
+cd ../frontend
+
+echo 'Install neccessary Packages'
+yarn install
+
+echo ''
+yarn run build