• Create a new folder
• Create a build.gradle file
• Inside the build.gradle file, put the following:

buildscript {
  repositories {
    jcenter()
  }
  dependencies {
    classpath 'io.ratpack:ratpack-gradle:1.4.4'
  }
}

apply plugin: 'io.ratpack.ratpack-groovy'

repositories {
  jcenter()
}

• Create directory structure inside your folder:

  • mkdir -p src/ratpack

• Create a ratpack.groovy file inside of src/ratpack

• Put this in there:

import static ratpack.groovy.Groovy.ratpack

ratpack {
  handlers {
    all {
      render "Hello World!"
    }
  }
}