Gradle Kotlin Fat Jar with Main

fat.jar.kt

// Put main in companion object of said class
/*
class App {
  companion object {
          @JvmStatic
          fun main(args: Array<String>) {
              System.out.println("Hello")
          }
      }
}

*/
val jar by tasks.getting(Jar::class) {
    manifest {
        attributes["Implementation-Title"] = "MyApp"
        attributes["Implementation-Version"] = "1.0.0"
        attributes["Main-Class"] = "com.server.App"
    }
    from(configurations.compileClasspath.get().map {
        logger.info("File: " + it.name)
        if (it.isDirectory) it else zipTree(it)
    })
}

// Run with "gradle clean jar"