Docker Engine & Daemon Internals: What Really Happens When You Run a Container

Title: Docker Engine & Daemon Internals: What Really Happens When You Run a Container

URL Source: https://medium.com/@isha372002/docker-engine-daemon-internals-what-really-happens-when-you-run-a-container-70cc67e3b809?source=rss------devops-5

Published Time: 2026-04-30T02:41:01Z

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# Docker Engine & Daemon Internals: What Really Happens When You Run a Container | by Isha Shaw | Apr, 2026 | Medium

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# Docker Engine & Daemon Internals: What Really Happens When You Run a Container

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> If you’re new to Docker, I’ve already covered **why Docker was introduced and container basics** in my previous [article](https://medium.com/p/582ae7ab71e0).

You type a simple command `docker run hello-world`and within seconds, a container is up and running. Magic? Not really.

Behind that one line, a lot is happening — processes are created, images are pulled, namespaces are set up, and the Linux kernel quietly does its job.

In this article, we’re going to see that magic layer by layer. By the end, you’ll understand:

* What the Docker Engine actually is
* What the Docker Daemon is doing behind the scenes
* How Docker really works inte