diff --git a/README.md b/README.md
index 8a36e36b2c..45dca25078 100644
--- a/README.md
+++ b/README.md
@@ -12,3 +12,5 @@ The `jenkins` directory contains an example of the `Jenkinsfile` (i.e. Pipeline)
 you'll be creating yourself during the tutorial and the `scripts` subdirectory
 contains shell scripts with commands that are executed when Jenkins processes
 the "Test" and "Deliver" stages of your Pipeline.
+
+ok
\ No newline at end of file
diff --git a/jenkins/Jenkinsfile b/jenkins/Jenkinsfile
index 5b2e173ad9..1f7b6e3bec 100644
--- a/jenkins/Jenkinsfile
+++ b/jenkins/Jenkinsfile
@@ -2,7 +2,7 @@ pipeline {
     agent {
         docker {
             image 'node:lts-buster-slim'
-            args '-p 3000:3000'
+            args '-p 4000:4000'
         }
     }
     environment {
diff --git a/src/App.js b/src/App.js
index 203067e4d7..cd6195f6cd 100644
--- a/src/App.js
+++ b/src/App.js
@@ -11,7 +11,7 @@ class App extends Component {
           <h1 className="App-title">Welcome to React</h1>
         </header>
         <p className="App-intro">
-          To get started, edit <code>src/App.js</code> and save to reload.
+          To get started, edit <code>src/App.js</code> and save to reload. ok?
         </p>
       </div>
     );