This project demonstrates how to set up an end-to-end CI/CD pipeline for a sample Java-based Shopping Cart web application.

⚠️ Note: The application source code is not authored by me. It was taken from open resources for learning purposes.

My contribution is focused on building the DevOps workflow – installing and configuring tools, setting up Jenkins pipelines, Dockerizing the application, integrating SonarQube for quality analysis, and deploying the containerized app.

Code → GitHub → Jenkins CI Pipeline → SonarQube → Maven Build → Docker Image Build & Push → Jenkins CD Pipeline → Deployment

• AWS EC2 (t2.medium)
• Jenkins – CI/CD automation
• Maven – Build tool
• Git – Source code management
• SonarQube – Code quality & static analysis
• Docker – Containerization & deployment
• Docker Hub – Container registry

• Launch a t2.medium EC2 instance (Amazon Linux 2).
• Connect via SSH.

sudo wget -O /etc/yum.repos.d/jenkins.repo \
    https://pkg.jenkins.io/redhat-stable/jenkins.repo
sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key
sudo yum upgrade -y
sudo dnf install java-17-amazon-corretto -y
sudo yum install jenkins -y
sudo systemctl daemon-reload
sudo systemctl enable jenkins
sudo systemctl start jenkins

Access Jenkins at: http://<EC2-Public-IP>:8080

sudo yum install docker -y
sudo systemctl enable docker
sudo systemctl start docker

(Docker installed and service enabled.)

sudo yum install git -y

(Git installed.)

docker run -d -p 9000:9000 sonarqube:lts-community

• Open in browser: http://<EC2-Public-IP>:9000
• Default credentials:
  • username: admin
  • password: admin (you’ll be prompted to update)
• Generate a SonarQube token from:
  Administration → Security → Users → Update Tokens → Generate Token Use this token in Jenkins CI pipeline configuration.

Install the following plugins:

• OpenJDK / Eclipse Temurin Installer
• SonarQube Scanner for Jenkins
• Docker Pipeline
• Docker Build Step
• CloudBees Docker Build and Publish

Configure these global tools in Jenkins:

• JDK
• Maven
• SonarQube Scanner
• Docker

By default, Jenkins cannot access the Docker daemon. Add Jenkins user to the Docker group:

sudo usermod -aG docker jenkins
sudo systemctl restart jenkins

Verify:

groups jenkins

→ should list docker.

If container already exists:

docker rm -f shopping-cart

Once deployed, the shopping cart application is available at:

URL: http://<EC2-Public-IP>:8070/home

• Admin Login

  • Username: admin
  • Password: admin

• User Login

  • Username: user
  • Password: password

• Setting up Jenkins and integrating with GitHub
• Using SonarQube for code quality analysis
• Dockerizing applications and pushing to Docker Hub
• Managing Jenkins-to-Docker permissions
• Deploying and accessing a Java web application in containers