Martin Heinz

Let's dive deep into Docker's union file system  ↦

Working with Docker CLI is very straightforward - you just build, run, inspect, pull and push containers and images, but have you ever wondered how do the internals behind this Docker interface actually work?

Behind this simple interface hides a lot of cool technologies and in this article you can learn about one of them - the union filesystem - the underlying filesystem behind all the container and image layers.


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