Docker for Rails Developers

Chapter 15Closing Thoughts and Next Steps

Congratulations! You’ve made it to the end.

Let’s take a moment to reflect on our journey throughout this book. We started with just the basics: what are containers and images? We saw how Docker provides packaging (images), delivery (automatic pulling of images), and an execution runtime (containers). We learned how these fundamental pieces provide a new way of thinking about software delivery.

The rest of the book has been an extended tutorial, guiding you through the process of creating, developing, and deploying a fully featured Rails app with Docker. We generated the Rails app using a container, and we created a custom image for running our Rails app, which we gradually enhanced. We introduced Docker ...