How To Use Environment Variables in Ruby - RubyGuides
Configure Database Connection Using Environment Variable In Rails - OSTechNix
Docker with Rails - Integrations | Dotenv
Ensure required environment variables are set when booting up Rails | Boring Rails: Skip the bullshit and ship fast
What are Environment Variables in Rails? | by Arthur Song | Dev Genius
How to Setup Development Environment for Ruby on Rails
Building a multi-region Rails application with PlanetScale
The Rubyist's Guide to Environment Variables - Honeybadger Developer Blog
Rails】環境変数（.env）を設定・取得する方法 | Miyachi Labo
Where to read ENV in Ruby on Rails | JTWay
GitHub - fnando/rails-env: Avoid environment detection on Rails
git - How to set up and use Rails environment variables in production server? - Stack Overflow
Rails console | RubyMine Documentation
Stop using the environment variables for sensitive keys in Rails - DEV Community
Rails Quick Tip - Display Current Environment in Console Prompt
