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Mastering Ubuntu Server by Jay LaCroix

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Creating, running, and managing Docker containers

Docker is a technology that seemed to come from nowhere and took the IT world by storm just a few years ago. The concept of containerization is not new, but Docker took this concept and made it very popular. The idea behind a container is that you can segregate an application you'd like to run from the rest of your system, keeping it sandboxed from the host operating system, while still being able to use the host's CPU and memory resources. Unlike a virtual machine, a container won't have a virtual CPU and memory of its own, as it shares resources with the host. This means that you will likely be able to run more containers on a server than virtual machines, since the resource utilization would ...

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