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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

# Why are multiple tags used?
We can give a single image as many tags as we want. At first glance, the following output might look like it lists three images. However, on closer inspection, it's just two—the `b4210d0aa52f` image is tagged as `latest` and `v1`.



Learn about Docker image tags and how to manage multiple tags for a single image.




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

Multiple Tags for a Single Image

Why are multiple tags used?