Sinatra Application, serve static index.html using nginx

nginx.conf

server {
  # ...nginx stuff
  index index.html;
  # ...more nginx stuff
}

sample_app.rb

require 'sinatra/base'

class SinatraApplication < Sinatra::Base
  if ENV['RACK_ENV'] == 'development'
    get '/' do
      File.read(File.join('public', 'index.html'))
    end
  end

  post '/handle_form' do
    # Handle parameters
  end
  
  get '/products' do
    haml :products
  end
end