Jenkins Pipeline file add

Dockerfile

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+# Use the official OpenJDK 8 as a base image
+FROM openjdk:8-jdk-alpine
+
+# Set the working directory inside the container
+WORKDIR /app
+
+# Copy the JAR file generated by Maven into the container
+COPY target/*.jar app.jar
+
+# Expose port 8080 for the application
+EXPOSE 8080
+
+# Command to run the application when the container starts
+CMD ["java", "-jar", "app.jar"]

Jenkinsfile

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+pipeline {
+    agent any
+    
+    stages {
+        // Stage 1: Compile
+        stage('Compile') {
+            steps {
+                script {
+                    sh 'mvn compile'
+                }
+            }
+        }
+
+        // Stage 2: Run Tests
+        stage('Run Tests') {
+            steps {
+                script {
+                    sh 'mvn test'
+                }
+            }
+        }
+
+        // Stage 3: Package as Docker Image
+        stage('Package as Docker Image') {
+            steps {
+                script {
+                    sh 'mvn package'
+                    sh 'docker build -t spring-petclinic .'
+                }
+            }
+        }
+    }
+}