Docker for Rails Developers

Chapter 6Adding a Database: Postgres

I don’t know about you, but I’m feeling great about our progress. We’ve gradually been leveling up our skills and are now within touching distance of our Dockerized Rails app having all the capabilities we’re used to when running Rails locally.

However, there’s still one glaring omission: we haven’t set up a database. The vast majority of Rails applications require some persistent storage.

In this chapter, we’ll rectify that, building on our experience of adding the Redis server, to connect a Postgres database.

While reading this chapter, remember to keep the bigger picture in mind. The skills you’re learning apply to any services you might want to add to your app, be it running background jobs (such as ...