Docker for Rails Developers

Quick Recap

Ahh, that’s better; we can hang up our apron. Our preparation—or mise en place—is complete.

Let’s review what we covered in this chapter:

1. We configured our app to run in production, with the necessary environment variables set.

2. We created an enhanced production image that precompiled our assets.

3. We discussed the need for making our images available on different machines, and you learned how Docker Registries facilitate this.

4. We saw the naming convention we need to refer to a specific version of an image unambiguously:

   [<registry hostname>[:port]/]<username>/<image name>[:<tag>]

5. You created a Docker Hub account (if you didn’t already have one).

6. We built our production image and pushed it to a public Docker Registry (Docker Hub), ...