Gradle build file for issue with ratpack-gradle 1.1.1 asset-pipeline

ratpack-gradle 1.1.1 asset-pipeline

buildscript {
  repositories {
    jcenter()
    mavenCentral()
  }
  dependencies {
    classpath "io.ratpack:ratpack-gradle:1.1.1"
    classpath "com.github.jengelman.gradle.plugins:shadow:1.2.2"
    classpath 'com.bertramlabs.plugins:asset-pipeline-gradle:2.4.3'
  }
}

apply plugin: "io.ratpack.ratpack-groovy"
apply plugin: "com.github.johnrengelman.shadow"
apply plugin: "idea"
apply plugin: "eclipse"
apply plugin: 'asset-pipeline'

repositories {
  jcenter()
}

dependencies {

  // Default SLF4J binding.  Note that this is a blocking implementation.
  // See here for a non blocking appender http://logging.apache.org/log4j/2.x/manual/async.html
  runtime 'org.slf4j:slf4j-simple:1.7.12'
  compile ratpack.dependency("handlebars")
  compile ratpack.dependency('session')
  compile ratpack.dependency('pac4j')
  compile "org.pac4j:pac4j-http:1.7.0"
  compile "org.pac4j:pac4j-oauth:1.7.0"
  compile 'com.bertramlabs.plugins:ratpack-asset-pipeline:2.4.3'
  testCompile "org.spockframework:spock-core:1.0-groovy-2.4"
}