Docker is the world's leading software containerization platform. Docker containers wrap a piece of software in a complete filesystem that contains everything needed to run: code, runtime, system tools, system libraries – anything that can be installed on a server. This guarantees that the software will always run the same, regardless of its environment. Docker provides an additional layer of abstraction and automation of operating-system-level virtualization on Linux. Docker uses the resource isolation features of the Linux kernel such as cgroups and kernel namespaces, and a union-capable file system such as OverlayFS and others to allow independent "containers" to run within a single Linux instance, avoiding the overhead of starting and maintaining virtual machines.

In this eBook, we provide a compilation of Docker examples that will help you kick-start your own automation projects. We cover a wide range of topics, from installation and configuration, to DNS and commands. With our straightforward tutorials, you will be able to get your own projects up and running in minimum time.

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