latest

Dockerfile

@@ -1,14 +1,23 @@
-# Use an official OpenJDK runtime as a parent image
-FROM openjdk:11
-
-# Set the working directory inside the container
+# First stage: Build the application using Maven
+FROM maven:3.8.1-openjdk-17 AS build
 WORKDIR /app
 
-# Copy the built JAR file from the build context
-COPY target/*.jar app.jar
+# Copy the Maven wrapper and the pom.xml file
+COPY .mvn/ .mvn
+COPY mvnw pom.xml ./
+
+# Copy the project source code
+COPY src ./src
+
+# Package the application
+RUN ./mvnw package
+
+# Second stage: Use an official OpenJDK runtime as a parent image
+FROM openjdk
+WORKDIR /app
+
+# Copy the JAR file from the build stage
+COPY --from=build /app/target/*.jar app.jar
 
 # Run the jar file
-CMD ["java", "-jar", "app.jar"]
-
-# Expose the port the app runs on
-EXPOSE 8080
+CMD ["java", "-jar", "app"]

Jenkinsfile

@@ -21,8 +21,6 @@ pipeline {
             steps {
                 script {
                     echo "Building Docker Image..."
-                    // Ensure Maven build is executed
-                    sh './mvnw clean package -DskipTests'
                     def dockerImage = docker.build("spring-petclinic")
                     echo "Docker Image built: ${dockerImage.id}"
                     // Store the Docker image ID in the environment if needed across stages
@@ -31,16 +29,17 @@ pipeline {
             }
         }
 
+        // Further stages would reference env.DOCKER_IMAGE_ID if needed
 
     }
 
     post {
         always {
             script {
+                // Use the saved Docker image ID from the environment if needed
                 if (env.DOCKER_IMAGE_ID) {
                     echo "Stopping and removing Docker Image with ID: ${env.DOCKER_IMAGE_ID}"
-                    // Using shell command to remove Docker image
-                    sh "docker rmi ${env.DOCKER_IMAGE_ID}"
+                    docker.rmi(env.DOCKER_IMAGE_ID)
                 }
             }
         }