Properly designed and implemented automation system requires its own infrastructure. You need to place components like code and configuration repository, agents responsible for executing the automated tests, acceptance tests software and tool to define automation processes. A leader in the last category is Jenkins. You can use it to automate the building, testing and deployment processes. Many of Jenkins features are available as plugins. In my previous post, I recommended running the infrastructure components as Docker containers. That includes Jenkins as well. You can use official images available on Docker Hub, but very soon you will find those images are missing many components, so you need to make your own. Of course not manually! Let Jenkins build the Jenkins image!