A Jenkinsfile is a script that defines a continuous delivery (CD) pipeline for a project. It is written using the Groovy programming language and is typically stored in the root directory of a project’s source code repository.
A Jenkinsfile allows teams to define their entire build, test, and deployment process as code, which can be versioned along with the project’s source code. This enables teams to easily reproduce their CD pipelines across multiple environments and ensure consistency between deployments.
Jenkinsfiles can be used with the Jenkins Pipeline plugin, which provides a powerful set of tools for creating complex CD pipelines. The plugin allows teams to define stages, steps, and post-build actions, as well as specify triggers for starting the pipeline, such as commits to a specific branch or changes to a specific file.
Overall, Jenkinsfiles provide teams with a flexible and scalable way to automate their CD pipelines, enabling them to focus on delivering value to their users rather than worrying about the intricacies of deployment.