5: The Docker Engine

In this chapter, we’ll take a look under the hood of the Docker Engine.

You can use Docker without understanding any of the things we’ll cover in this chapter, so feel free to skip it. However, to be a real master of anything, you need to understand what’s going on under the hood. So, to be a real Docker master, you need to know the stuff in this chapter.

This will be a theory-based chapter with no hands-on exercises.

As this chapter is part of the technical section of the book, we’re going to employ the three-tiered approach where we split the chapter into three sections:

  • The TLDR: Two or three quick paragraphs that you can read while standing in line for a coffee
  • The deep dive: The really long bit where we get into ...

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