Topic: Docker
Overlays are a very important concept when it comes to Docker storage. This article explains what it is and how it works.
...One of the most fundamental basics about Linux is understanding the concept of the root user. We run programs either with “root-permissions” or without root permissions. But it does not necessarily have to be one or the other. We can use capabilities to make this a spectrum and break down root permissions into several distinct pieces. Capabilities are essential to secure containers.
...To understand Docker at its core, we need to understand what Kernel namespaces are. Namespaces are the most essential part of what makes up a container.
...Using containers is one of the things that fueled the DevOps and Agile movements. Being able to run docker containes has become a basic skill. But even though everyone is familar with docker very little people understand its amazingly simple core principles. This article is going to fix that.
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