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In this course, you’ll learn about containers, creating images, containerizing applications, and effectively deploying Docker in real-world scenarios.

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Containers have revolutionized the IT world, making it difficult to know where to begin. This course will take you from basics to proficiency step by step.
You’ll start by learning the basics of containers and how they work. Then, you’ll explore key concepts like images and the Docker engine. With the basics out of the way, you’ll learn how to containerize and run an application. After completing this course, you’ll be ready to use Docker in the real world.

Docker Guide for Beginners


When Docker was first released, the Docker Engine had two major components:

- The Docker daemon (sometimes referred to as just “the daemon”)
- LXC

The **daemon** was a monolithic binary containing all the code for the API, image builders, container execution, volumes, networking, and more.

**LXC** did the hard work of interfacing with the Linux kernel and constructing the required namespaces and cgroups to build and start containers.





# Replacing LXC

Relying on LXC posed several problems for the Docker project: 
- LXC is Linux-specific, and Docker had aspirations of being multi-platform.

- Docker was evolving fast, and there was no way to ensure LXC evolved in the ways Docker needed.

To improve the experience and help the project evolve more quickly, Docker replaced LXC with its own tool, libcontainer. Libcontainer’s goal was to be a platform-agnostic tool that gave Docker access to the fundamental container building blocks in the host kernel. Libcontainer replaced LXC in Docker a very long time ago.

Take a deep dive into the Docker Engine. 

About the Course

An Overview of Containers

Docker and Container-Related Standards and Projects

The Big Picture

The Docker Engine

Working with Images

Working with Containers

Containerizing an Application

Conclusion

Appendix: Getting Docker

The Deep Dive