The Jenkins project runs its own Jenkins instance for CI builds on ci.jenkins.io.
It will build all plugin repositories in the jenkinsci organization that have a Jenkinsfile in the root of the repository.
The typical plugin build (Maven or Gradle) can be run by just having the following statement in the Jenkinsfile:
buildPlugin(
forkCount: '1C', // run this number of tests in parallel for faster feedback. If the number terminates with a 'C', the value will be multiplied by the number of available CPU cores
useContainerAgent: true, // Set to `false` if you need to use Docker for containerized tests
configurations: [
[platform: 'linux', jdk: 21],
[platform: 'windows', jdk: 17],
])'Gradle support in buildPlugin() is deprecated and will be eventually removed. Please use:'
buildPluginWithGradle(
forkCount: '1C', // run this number of tests in parallel for faster feedback. If the number terminates with a 'C', the value will be multiplied by the number of available CPU cores
useContainerAgent: true, // Set to `false` if you need to use Docker for containerized tests
configurations: [
[platform: 'linux', jdk: 21],
[platform: 'windows', jdk: 17],
])
If the Jenkinsfile configuration includes Java 8, you will receive a low-level class version error when using version 4.52 or later of the plugin parent POM.
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To learn more about the Pipeline library providing this functionality, see its GitHub repository.