Docker is the most widely-used framework for implementing operating system-level virtualization. This technology allows you to have an independent container: a layer that is lighter than a virtual machine, but still allows you to compartmentalize software. This mostly isolates all processes, making it feel like each container is a virtual machine. Docker works quite well at both extremes of the development spectrum: it's an expedient way to set up the content of this book for learning purposes, and may become your platform of choice for deploying your applications in complex environments. This recipe is an alternative to the previous recipe.
However, for long-term development environments, something ...
