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Gain insights into Docker with Nigel Poulton. Learn about container basics, image creation, and application containerization, and demystify jargon to proficiently deploy Docker in real-world scenarios.

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Containers have revolutionized the IT world and it can be hard to know where to start. In this course, Docker Captain Nigel Poulton guides you through the basics all the way to proficiency.

You'll learn why we have containers and how they work. You’ll run through the basics like images, the Docker engine, and containers. With the basics out of the way, you'll then containerize an application and learn how to run it. Throughout the course, Nigel will demystify all the jargon and buzzwords. When you're done, you'll be ready to use Docker in the real world.

The Beginner’s Guide to Docker

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



Look at Docker images with multiple tags.

About the Course

Containers From 30,000 Feet

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 there multiple tags?