Jenkins & Scriptable build from pipeline plugin of Jenkins 2.0 then talking about immutable build & testing environment (Dockerize everything)

1. Jenkins &
Scriptable Build

2. What’s Up?

4. Why Pipeline
• Complex build/test/deploy pipelines
• traditional Jenkins projects too rigid
• sometimes need custom logic
• Stages, human input, parallelism, …
• Long-running build steps survive Jenkins restarts

5. Why “as code”?
• Overall job definition is a script
• calls your build tools and scripts for details
• Script can be versioned alongside project sources
• experimental branches
• code review!
• Keep less configuration in $JENKINS_HOME

6. Multibranch Build
• Branch with a Jenkinsfile → one subproject
• that is your Workflow script
• just checkout scm to get full source tree
• Can edit Jenkinsfile in your branch
• revision matches sources

7. Organization Folders
• New folder type: “organization”
• each item is a multibranch Pipeline project
• adds/removes projects automatically
• Only configuration is Git repo + credentials
• one step closer to “code as config”

8. Pipeline Plugin for Docker
• Simple entry point to Docker-related functions
• Build images from Dockerfile
• Test images in temporary containers
• Push to Docker Hub or private Docker registry

9. Docker as Build
Environment
• Run build steps inside a container!
✴ use a standard image from Docker Hub
✴ or from your company’s registry
✴ or build it from project sources
• Use generic Linux slaves
• Reproduce CI environment on your laptop
• Pipeline controls container lifecycle
docker.image('maven:3.3.3-jdk8').inside {sh 'mvn verify'}

10. Dockerized Test Env

12. Demo
Stable Build Env
• Multi-branch job monitor
• Concurrent build (docker & no shared infra.)
• < 15 mins for commit stage

13. Reference
• New Jenkins Server (LDAP)
• Jenkins pipeline plugin tutorial
• Jenkins pipeline reference card
• Plugins compatibility
• Introduction @CloudBees

14. SCM ChangeSet
From scm change set to determine which component
should be built:
• 3 ways you can get the SCM changes
• From Jenkins web api
• More ….