simple and fast Ruby/Rack/Thin setup for a serving static html site with ssl support

config.ru

require 'rack/contrib/try_static'
require 'rack/ssl-enforcer'

if ENV['RACK_ENV'] == 'production'
  use Rack::SslEnforcer
end

use Rack::TryStatic,
    :root => "public",
    :urls => %w[/],
    :try => ['.html', 'index.html', '/index.html']

run lambda { [404, {'Content-Type' => 'text/html'}, ['Not Found']]}

Gemfile

source :rubygems
gem 'rack-contrib'
gem 'thin'
gem 'rack-ssl-enforcer'

Procfile

web: bundle exec thin start -p $PORT -e $RACK_ENV