So Docker is a tool that allows developers or system admins to easily deploy their applications in a sandbox - called containers - to run on the host operating systems, for example, Linux. Wikipedia defines Docker as 'An open-source project that automates the deployment of software applications inside containers by providing an additional layer of abstraction and automation of OS-level virtualization on Linux.' In this chapter, we will be talking about using the TestCafe Docker Image and how we can run our tests inside the Docker container. Chapter 15.2 - Configure TestCafe with ReportPortal