Automate Spring Boot Deployment with Jenkins, Docker, and One‑Click CI/CD

Install Docker CE on CentOS 7:

Update yum packages.

Remove old Docker versions.

Install required utilities: yum install -y yum-utils device-mapper-persistent-data lvm2 Add Docker repository:

yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

Install Docker: yum install docker-ce Start and enable Docker: systemctl start docker and systemctl enable docker Verify installation with docker version.

Install Jenkins using Docker:

docker run --name jenkins -u root --rm -d -p 8080:8080 -p 50000:50000 -v /var/jenkins_home:/var/jenkins_home -v /var/run/docker.sock:/var/run/docker.sock jenkinsci/blueocean

Access Jenkins at http://{host_ip}:8080 and retrieve the initial admin password with

docker exec -it jenkins cat /var/lib/jenkins/secrets/initialAdminPassword

.

Complete Jenkins initialization:

Enter the password.

Install recommended plugins.

Create an admin user.

Install additional plugins such as Maven Integration, Publish Over SSH, and Gitee (if needed).

Configure Maven in Jenkins (Global Tool Configuration) and set up a new freestyle job:

Enable Git source management with repository URL and credentials.

Add a build step “Invoke top‑level Maven targets” with goal clean install -Dmaven.test.skip=true.

Save the job.

Test the pipeline by building the job and checking the console output for a successful JAR package.

Create a Dockerfile in the Spring Boot project root:

FROM jdk:8
VOLUME /tmp
ADD target/zx-order-0.0.1-SNAPSHOT.jar app.jar
EXPOSE 8888
ENTRYPOINT ["Bash","-DBash.security.egd=file:/dev/./urandom","-jar","/app.jar","--spring.profiles.active=prd"]

Update the Jenkins job to build the Docker image and run the container:

cd /var/jenkins_home/workspace/zx-order-api
docker stop zx-order || true
docker rm zx-order || true
docker rmi zx-order || true
docker build -t zx-order .
docker run -d -p 8888:8888 --name zx-order zx-order:latest

Verify the deployment with docker ps, docker logs, and by accessing http://{host_ip}:8888 in a browser.