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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

# Start a container from the image
If you've been following along, you'll have a copy of the `ubuntu:latest` image on your Docker host, and you can use the `docker run` command to start a container from it.

Run the following `docker run` command to start a new container called `test` from the `ubuntu:latest` image.


$ docker run --name test -it ubuntu:latest bash

root@bbd2e5ad1817:/#


Notice how your shell prompt has changed. This is because the container is already running, and your shell is attached to it.

# The `docker run` command
Let’s quickly examine the `docker run` command. 

The `docker run` command tells Docker to start a new container. The `--name` flag instructs Docker to call this container `test`. Next, the `-it` flags instruct Docker to make the container interactive and to attach your shell to the container’s terminal. After that, the command directs Docker to base the container on the `ubuntu:latest` image and to start a Bash shell as the container’s main app.

Run the `ps` command from inside the container to list all running processes.



Learn how to run a container and exit from it without terminating it.

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

Managing Containers

Start a container from the image