One of my 2018 learning goals is to become more familiar with containers. This blog post (first of a series) is intended to help broaden my own understanding of containers; hopefully it is also of use to others.

What is a Container?

A container is a type of application virtualisation that isolates and sandboxes application processes within an operating system (OS).

On Linux, a container is a process (or multiple), isolated from other processes through namespaces. The container sees a separate isolated filesystem:

Overview of how a container runs on Linux

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