Add HTTP Basic Auth to any environment except Development and Test to Rails App

basic_auth.rb

unless Rails.env.development? || Rails.env.test?
  YourApplication::Application.configure do |config|
    config.middleware.insert_after(::Rack::Lock, "::Rack::Auth::Basic", "Application Name") do |u, p|
      [u, p] == [ENV['HTTP_USER'], ENV['HTTP_PASSWORD']]
    end
  end
end

gistfile1.sh

# Configure Heroku ENV variables
heroku config:add HTTP_USER='foo' HTTP_PASSWORD='bar' -a myapp-staging