debug vertx app via gradle task

vertx_debug.gradle

task runVertx(type: Exec, dependsOn: ['compileGroovy']) {
	if (System.getProperty('debug')) {
		environment 'VERTX_OPTS', '-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005'
	}
	ext.vertxClasspath = (sourceSets.main.runtimeClasspath.filter { !it.path.contains('groovy') }).asPath
	def configFile = 'etc/conf.json'
	commandLine 'vertx', 'run', 'src/MyVertxModule.groovy', '-conf', configFile, '-cp', "src/:$vertxClasspath"
}