jenkins-docker-setup

Experiments on how to automate Jenkins setup with docker, including Docker-based agents, that are created on demand.

Summary

• Four Dockerfiles:
  • jenkins-master: Docker image, that defines defaults. Uses ONBUILD and is supposed to be used as a parent Dockerfile.
  • a data volume for jenkins_home and the logfiles (the extracted war path is redirected to stay out of the volume container)
  • (not currently in use) a jenkins-buildagent (buildagent containers are started/destroyed on demand by jenkins-master)
  • jenkins-example: a Docker container, that extends jenkins-master. This examples contains configuration for Docker based buildagents, copies certificates for a Docker host and installs additional plugins

Jenkins master

• executors are set to 0
• jenkins 2 setup wizard is deactivated
• a default user 'admin' (password 'admin') is generated. Values can be changed through environment variables
• some plugins are pre-installed. List of plugins can be customized through environment variable.

Jenkins example

• jenkins-example contains cert-files from (my local) docker host.