Added jenkinsfile and dockerfile

Dockerfile

@@ -0,0 +1,16 @@
+FROM node:22.13.1-bookworm AS build
+WORKDIR /build
+
+COPY package.json package.json
+COPY package-lock.json package-lock.json
+RUN npm ci
+
+COPY public/ public
+COPY src/ src
+RUN npm run build
+
+FROM httpd:alpine
+WORKDIR /usr/local/apache2/htdocs
+COPY --from=build /build/build/ .
+RUN chown -R www-data:www-data /usr/local/apache2/htdocs \
+    && sed -i "s/Listen 80/Listen \${PORT}/g" /usr/local/apache2/conf/httpd.conf

Jenkinsfile

@@ -0,0 +1,33 @@
+pipeline {
+    agent any
+    stages {
+        stage('Checkout') {
+            steps {
+                git 'http://git.abilityell.com/william/react-project.git'
+            }
+        }
+        stage('Build') {
+            steps {
+                sh 'mvn clean package'
+            }
+        }
+        stage('Test') {
+            steps {
+                sh 'mvn test'
+            }
+        }
+        stage('Deploy') {
+            steps {
+                sh 'kubectl apply -f deployment.yaml'
+            }
+        }
+    }
+    post {
+        success {
+            slackSend(message: "Pipeline succeeded! ✅")
+        }
+        failure {
+            slackSend(message: "Pipeline failed! ❌")
+        }
+    }
+}