Rails, Ember, Redis, nginx and docker

Question

Colleagues, I have a front-end application based on Ember and Rails (running on nginx) which also uses redis as a cache.

I want to dockerize this application, but not sure about best practices. Would it be best to create one container with a dockerfile that pulls in all these pieces, or should each component be in its own container?

For bonus points: I have to retrieve the code from private bitbucket repos and.. how are we meant to store our secrets and other config files when using containers?

Answer 1

So, I'll try my best from a phone,

Secrets are to be kept in environment variables, so you may need to update your application code to work with those.

As for dockerizing, I typically do backend (rails in this case) in one (or more) container(s) and nginx in a single container bundled with a single page app (ember in this case)

So, you should have two dockerfiles total.

Here are some resources that hopefully provide enough to get started:

Dotnet + react: https://github.com/sillsdev/appbuilder-portal/ Modern bleeding edge ember: https://gitlab.com/NullVoxPopuli/emberclear/ Old ember: https://gitlab.com/precognition-llc/aeonvera-ui Rails: https://gitlab.com/precognition-llc/aeonvera

For the nginx, that first link shows a dotnet core and react app with nginx and has the deployment strategy I've described. For nginx, you'll start with a node container, or the ember-cli image from danlynn (who still hasn't responded to me about getting those on the official ember docketed), and use multistage builds to eventually copy your dist folder to a directory in the nginx container in the last stage.

Hope this helps. I can clarify more if needed.