Quick Recap

Wow, what an action-packed chapter! Let’s review the contents we have learned.

We'll cover the following

Highlights

Let’s review the highlights:

  1. We saw our first, rough-and-ready Dockerfile designed to allow us to run our app with a Rails server.

  2. We built our custom image from this Dockerfile with docker build . and also named our images.

  3. We listed the images on our system by issuing the docker images command.

  4. We started up a Rails server to run our app and saw it running in a browser.

What to expect in the next chapter?

In the next chapter, we will make some further refinements to our Dockerfile. In the process, we will learn how to speed up image builds by taking advantage of the built-in caching mechanism.

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