a.rb

task startElasticSearch(){
    if (System.properties['os.name'].toLowerCase().contains('windows')) {
        logger.error( "Not Starting Elasticsearch ....")
        return
    } else if (System.properties['os.name'].contains('Mac OS X')) {
        println( "Starting elasticsearch locally")
    }

    jrubyexec {
        // group 'Site'
        // configuration "asciidoctor"
        script "${projectDir}/scripts/install-run-elasticsearch.rb"
    }
}