ratpack

#!/usr/bin/env groovy
import com.bleedingwolf.ratpack.Ratpack
import com.bleedingwolf.ratpack.RatpackServlet

def appScript = new File(args[0]).text
def appClosure = new GroovyShell().evaluate("def webapp = { ${appScript} }; return webapp ")

def app = Ratpack.app(appClosure)

RatpackServlet.serve(app)