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The Ultimate Docker Container Book

You're reading from   The Ultimate Docker Container Book Build, test, ship, and run containers with Docker and Kubernetes

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Product type Paperback
Published in Aug 2023
Publisher Packt
ISBN-13 9781804613986
Length 626 pages
Edition 3rd Edition
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Concepts
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Author (1):
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Dr. Gabriel N. Schenker Dr. Gabriel N. Schenker
Author Profile Icon Dr. Gabriel N. Schenker
Dr. Gabriel N. Schenker
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Table of Contents (26) Chapters Close

Preface 1. Part 1:Introduction
2. Chapter 1: What Are Containers and Why Should I Use Them? FREE CHAPTER 3. Chapter 2: Setting Up a Working Environment 4. Part 2:Containerization Fundamentals
5. Chapter 3: Mastering Containers 6. Chapter 4: Creating and Managing Container Images 7. Chapter 5: Data Volumes and Configuration 8. Chapter 6: Debugging Code Running in Containers 9. Chapter 7: Testing Applications Running in Containers 10. Chapter 8: Increasing Productivity with Docker Tips and Tricks 11. Part 3:Orchestration Fundamentals
12. Chapter 9: Learning about Distributed Application Architecture 13. Chapter 10: Using Single-Host Networking 14. Chapter 11: Managing Containers with Docker Compose 15. Chapter 12: Shipping Logs and Monitoring Containers 16. Chapter 13: Introducing Container Orchestration 17. Chapter 14: Introducing Docker Swarm 18. Chapter 15: Deploying and Running a Distributed Application on Docker Swarm 19. Part 4:Docker, Kubernetes, and the Cloud
20. Chapter 16: Introducing Kubernetes 21. Chapter 17: Deploying, Updating, and Securing an Application with Kubernetes 22. Chapter 18: Running a Containerized Application in the Cloud 23. Chapter 19: Monitoring and Troubleshooting an Application Running in Production 24. Index 25. Other Books You May Enjoy

Benefits of testing applications in containers

In this section, we are discussing the benefits of testing applications in containers, including the ability to replicate production environments, ease of configuration and setup, and faster test execution.

But before we start, let’s pause for a second and ask ourselves, why do we care to test at all?

Why do we test?

Every person working in any role in software development is aware that one needs to implement and ship new or changed application features at a fast cadence. There is constant pressure to implement new code and ship it as quickly as possible to production. But business analysts that write the feature specifications and software engineers that write the actual code implementing the specifications are just human beings. Human beings working under a lot of pressure tend to make mistakes. These mistakes can be subtle, or they can be quite substantial. Those mistakes will manifest themselves in the application running...

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