As shown in the examples, Docker is driven by text commands, either issued on a command line or collected in a text file. This means Docker can integrate with any system that can emit text commands. With the popularity of DevOps increasing, more tools are available to integrate with Docker.
Docker in the Development Phase
Docker makes it easy to give developers private environments in which they develop their software. Docker also makes it easy to automate (and thus come closer to ensuring) that developers thoroughly test their code. For example, Git, the distributed version control system, has the concept of hooks which are scripts that are invoked when designated actions occur, such as committing code to a repository. When a developer checks or commits new code, Git can invoke Docker to start up a new container with which to test that code.