Make SSL/error settings configurable via env vars

config/environments/production.rb

@@ -10,7 +10,7 @@ Rails.application.configure do
   config.eager_load = true
 
   # Full error reports are disabled.
-  config.consider_all_requests_local = false
+  config.consider_all_requests_local = ENV.fetch("RAILS_SHOW_ERRORS", "false") == "true"
 
   # Turn on fragment caching in view templates.
   config.action_controller.perform_caching = true
@@ -25,7 +25,7 @@ Rails.application.configure do
   config.active_storage.service = :local
 
   # Assume all access to the app is happening through a SSL-terminating reverse proxy.  
-  config.assume_ssl = true
+  config.assume_ssl = ENV.fetch("RAILS_ASSUME_SSL", "true") == "true"
 
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
   config.force_ssl = ENV.fetch("RAILS_FORCE_SSL", "false") == "true"