Setting Up Docker Containers as Jenkins Build Agents
👋 Hi, I’m Praduman Prajapati — a DevOps Engineer with hands-on experience in building production-grade CI/CD pipelines, containerized applications, and scalable, secure, and automated cloud infrastructure.
I’ve work on multiple real-world projects including: • Automated CI/CD pipelines using Jenkins, GitHub Actions, and ArgoCD • Kubernetes cluster provisioning and deployment on AWS (EKS and kubeadm) • Containerization and orchestration with Docker and Kubernetes • Infrastructure provisioning and automation using Terraform and Ansible • DevSecOps implementations with Trivy, SonarQube, OWASP, Prometheus, and Grafana • Production-grade deployments of applications on cloud infrastructure
Firstly, Create an EC2 instance
Then setup jenkins on it
When the above steps done, then wait for the Jenkins to be started
Docker Slave Configuration
To install Docker, run the command below on the EC2 instance terminal
sudo apt update && upgrade sudo apt install docker.io
Grant Jenkins user and ubuntu user permission to docker daemon and restart docker
sudo su- usermod -aG docker jenkins usermod -aG docker ubuntu systemctl restart docker
Switch to the Jenkins user
su jenkinsCheck if the Jenkins user can run containers
docker run hello-world
Sometimes jenkins might not pickup these changes. So, just restart your jenkins
To restart Jenkins, simply go to your browser and type
http://<your-EC2-public-ip>:8080/restart
Install the Docker pipeline plugin in jenkins
We should install the Docker pipeline plugin so that Jenkins can work with Docker as an agent. This means that when running a job, Jenkins needs to know that if a user provides a Jenkins file to run a specific job on Docker, the configuration is in place
Click on Manage Jenkins
Click on plugins and install Docker pipeline plugin
Restart Jenkins after the installation is finished
Congratulations! You are now ready to begin creating your pipelines.
