gradle with sbt-assembly like function

build.gradle

group 'com.example'
version '1.0'

apply plugin: "java"
apply plugin: "scala"
apply plugin: "application"

sourceCompatibility = 1.8


configurations {
    provided
    compile.extendsFrom provided
}

repositories {
    maven{ url "https://maven-central.storage.googleapis.com"}
//    mavenCentral()
}

ext {
    versions = [
        scala: '2.10.4'
    ]
}

dependencies {
    compile "org.scala-lang:scala-library:${versions.scala}"
    testCompile group: 'junit', name: 'junit', version: '4.11'
}
task assembly(type: Jar) {
//    manifest {
//        attributes 'Implementation-Title': 'Gradle Jar File Example',
//                'Implementation-Version': version,
//                'Main-Class': 'com.example.mainclass'
//    }
    baseName = project.name + '-assembly'
    from {
        (configurations.runtime - configurations.provided).collect {
            it.isDirectory() ? it : zipTree(it)
        }
    }
    with jar
}

run {
    if (project.hasProperty('args')) {
        args project.args.split('\\s+')   
    }
}