# jenkins

Integrate Nexus and Artifactory with Jenkins, GitHub Actions, and GitLab CI — push artifacts, pull dependencies, and implement promotion workflows.

Master Jenkins declarative pipelines — stages, steps, post actions, environment variables, credentials, parallel execution, and when conditions.

Run Jenkins pipeline stages inside Docker containers for clean, reproducible builds — agent configuration, custom images, Docker-in-Docker, and Kaniko alternatives.

Install Jenkins on Ubuntu and Docker, configure security settings, manage plugins, and create your first freestyle and pipeline jobs step by step.

Build and maintain Jenkins shared libraries — directory structure, global vars, custom steps, class-based libraries, testing, and versioning strategies.