Set up so we can test with precompiled assets in dev, by passing ASSE…

…TS_COMPILED_LIKE_IN_PROD as an env variable

config/environments/development.rb

@@ -6,6 +6,18 @@
 Rails.application.configure do # rubocop:disable Metrics/BlockLength
   # Settings specified here will take precedence over those in config/application.rb.
 
+  # Pass in an env variable ASSETS_COMPILED_LIKE_IN_PROD
+  # to test without assets compiled, like in prod.
+  # You then need to run
+  #   - yarn build
+  #   - yarn build:css
+  #   - rails assets:precompile
+  #   to get the assets ready before booting the app.
+  if ENV["ASSETS_COMPILED_LIKE_IN_PROD"].present?
+    config.assets.compile = false
+    config.serve_static_files = true
+  end
+
   # In the development environment your application's code is reloaded any time
   # it changes. This slows down response time but is perfect for development
   # since you don't have to restart the web server when you make code changes.