Jenkins

.github/workflows/ci-cd.yml

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+name: CI/CD - Docker Build & Push
+
+on:
+  push:
+    branches:
+      - main  # or change to your main branch name
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: vinayasuresh
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: vinayasuresh/spring-petclinic:latest

Dockerfile

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+FROM anapsix/alpine-java 
+LABEL maintainer="[email protected]" 
+COPY /target/spring-petclinic-1.5.1.jar /home/spring-petclinic-1.5.1.jar 
+CMD ["java","-jar","/home/spring-petclinic-1.5.1.jar"]

Jenkinsfile

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+pipeline {
+    agent {
+        docker {
+            image 'maven:3.9.6-eclipse-temurin-17'
+        }
+    }
+
+    environment {
+        IMAGE_NAME = "local-app:latest"
+        CONTAINER_NAME = "local-app-container"
+    }
+
+    stages {
+        stage('Build App') {
+            steps {
+                sh 'mvn clean package -DskipTests'
+            }
+        }
+
+        stage('Build Docker Image') {
+            steps {
+                sh 'docker build -t $IMAGE_NAME .'
+            }
+        }
+
+        stage('Stop Existing Container') {
+            steps {
+                sh '''
+                    docker stop $CONTAINER_NAME || true
+                    docker rm $CONTAINER_NAME || true
+                '''
+            }
+        }
+
+        stage('Run Docker Container') {
+            steps {
+                sh '''
+                    docker run -d --name $CONTAINER_NAME -p 8080:8080 $IMAGE_NAME
+                '''
+            }
+        }
+    }
+}