Master everything you need to know about Docker containers to easily create, deploy, and run your applications with containers.

DevOps for Developers

By now, you've probably heard the buzz around Docker. It's fundamentally changed the development process and been adopted by software teams of all sizes, and for good reason: Docker makes it considerably easier to create, deploy, and run applications with the use of containers.

Docker is here to stay, and is becoming one of the most in-demand technologies on the market. Mastering it now will help you produce better software, level up your career, and stand out from the crowd. Get started today.

Docker for Developers

When you create a container, you create it from an image that is available on your machine.



There are two ways to have an image available on your machine:

* Create an image using the *docker build* command. We saw this in the previous [chapter](https://www.educative.io/courses/docker-for-developers/creating-a-simple-image).

* Get an image from a Registry, using the *docker pull* command or implicitly when using the *docker run* command for an image that is not available locally.

Here's what happens when you create a container from an image that is pulled from a registry:



In this lesson, you will be introduced to the rationale behind publishing a private image.

Rationale for Publishing