Jenkins Installation via Docker: A Step-by-Step Guide

Installation via Docker

Run the following commands in your terminal to install and set up Jenkins using Docker:

docker --version # Check Docker version

docker pull jenkins/jenkins:lts # Pull the latest stable Jenkins image

docker images # List downloaded Docker images

docker run --detach --publish 8090:8080 --volume jenkins_home:/var/jenkins_home --name jenkins jenkins/jenkins:lts # Run Jenkins on localhost:8090

docker run -u 0 -d --net=host -v /home/jenkins/home:/var/jenkins_home -v /home/jenkins/root:/root jenkins/jenkins # Optional alternative setup

Accessing Jenkins and Retrieving Initial Admin Password

After running the container, retrieve the initial admin password using the command below:

docker exec jenkins cat /var/jenkins_home/secrets/initialAdminPassword # Retrieve initial admin password

Open your browser and go to localhost:8080, then enter the initial admin password to complete the setup.

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Understanding Key Jenkins Concepts

Project or Job

• A user-configured task that Jenkins will manage.

Build

• A single execution of a project.

Build Step

• An individual task within a project.

Build Trigger

• Defines how and when a build starts (manual or automated).

Plugins

• Extend Jenkins' core functionality to meet custom requirements.

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By following this guide, you can quickly set up Jenkins using Docker and start automating your development workflows. Keep exploring Jenkins features and plugins to optimize your CI/CD processes!