One‑Click Jenkins & Docker CI/CD for Spring Boot Projects

This article demonstrates how to set up a one‑click automated deployment pipeline for a Spring Boot project using Docker and Jenkins on a CentOS 7 host.

Install Docker

Update yum packages: yum update Remove old Docker versions:

yum remove docker docker-common docker-selinux docker-engine

Install required utilities:

yum install -y yum-utils device-mapper-persistent-data lvm2

Add Docker CE repository:

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

Install Docker CE: yum install docker-ce Start Docker and enable on boot:

systemctl start docker
systemctl enable docker

Verify installation:

docker version

Install Jenkins

Run Jenkins container:

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 complete the initial setup.

Unlock Jenkins by retrieving the admin password from the container:

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

Install recommended plugins, including Maven Integration, Publish Over SSH, and Gitee (if needed).

Create an admin user.

System Configuration

Install required plugins: Maven Integration, Publish Over SSH, Gitee, etc.

Configure Maven under “Global Tool Configuration”.

Create a Jenkins Job

Create a new “Freestyle project”.

Configure source code management with Git, providing 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 Build

Trigger a build and monitor the console output to ensure the JAR is produced.

If dependencies fail to download on the first attempt, rebuild.

Locate the workspace at /var/jenkins_home/workspace and verify the JAR.

Run the Project

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"]

Add a build step in the Jenkins job to build and run the Docker image:

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

Save and build the job.

Verify the container is running with docker ps and view logs with docker logs.

Access the application in a browser at http://{host_ip}:8888.