Containers for Dummies

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CHAPTER 4 Preparing for and Testing Docker Containers 27 These materials are © 2017 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Preparing for and Testing Docker Containers Y ou've learned a lot about why companies want to adopt containers, so let's switch gears a bit into something a bit more technical. In this chapter, I introduce you to all the components that make Docker work. There is far more detail inherent in Docker than I'm able to cover in this book, so I'm just covering the big stuff here. Understanding Docker Container Constructs There are a bunch of different components to Docker that you need to understand in order to really put the software through its paces. I'll start with a look at the high-level constructs and tell you what each one is and what it does. In Chapter 5, you have an opportu- nity to see Docker's installation requirements and processes and see how easy it is to deploy a new container from a registry. Chapter 4 IN THIS CHAPTER » Identifying the major components of the Docker architecture » Seeing how images are constructed » Discovering the operating system prerequisites for both Docker editions

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