Setting Up Jenkins with Docker: A Step‑by‑Step Guide

Jenkins is an automation server that can create jobs to build, test, and deploy applications; pipelines are scripts that define the sequence of steps such as checking out code, testing, building, packaging, creating Docker images, and deploying.

The first step is to install Docker on the host machine and start a Jenkins container with the command:

docker run --name jenkinsci -p 8080:8080 jenkins/jenkins:lts

This command pulls the Jenkins LTS image, runs it, and after initialization the console displays an automatically generated administrator password. The password shown in the logs (and also stored in /var/jenkins_home/secrets/initialAdminPassword ) is:

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Open a browser and navigate to http://localhost:8080/ . Enter the admin password, click “Continue”, and on the next screen choose “Install suggested plugins”. Wait while Jenkins downloads and installs the plugins.

After the plugins are installed, Jenkins prompts you to create an admin user. Fill in the user details, complete the setup, and finally click “Start using Jenkins” to reach the Jenkins dashboard.