Serve files from folder with webrick

server.rb

require 'webrick'

include WEBrick    # let's import the namespace so 
                   # I don't have to keep typing 
                   # WEBrick:: in this documentation.

def start_webrick(config = {})
  # always listen on port 8080
  config.update(:Port => 8080)     
  server = HTTPServer.new(config)
  yield server if block_given?
  ['INT', 'TERM'].each {|signal| 
    trap(signal) {server.shutdown}
  }
  server.start

end
  
start_webrick(:DocumentRoot => '.')