build.gradle

// NOTE: This module is intended to be a stand-alone example which does depend on nebula.
defaultTasks 'clean', 'fatJar'

apply plugin: 'java'

repositories {
  mavenCentral()
}

configurations {
  compile
}

dependencies {
  compile  'io.github.openfeign:feign-core:9.0.0'
  compile  'io.github.openfeign:feign-gson:9.0.0'
}

// create a self-contained jar that is executable
// the output is both a 'fat' project artifact and
// a convenience file named "build/github"
task fatJar(dependsOn: classes, type: Jar) { 
  classifier 'fat'

  doFirst {
    // Delay evaluation until the compile configuration is ready
    from {
      configurations.compile.collect { zipTree(it) }
    }
  }

  from (sourceSets*.output.classesDir) {
  }

  // really executable jar
  // http://skife.org/java/unix/2011/06/20/really_executable_jars.html

  manifest {
    attributes 'Main-Class': 'feign.example.github.GitHubExample'
  }

  // for convenience, we make a file in the build dir named github with no extension
  doLast {
    def srcFile = new File("${buildDir}/libs/${archiveName}")
    def shortcutFile = new File("${buildDir}/github")
    shortcutFile.delete()
    shortcutFile << "#!/usr/bin/env sh\n"
    shortcutFile << 'exec java -jar $0 "$@"' + "\n"
    shortcutFile << srcFile.bytes
    shortcutFile.setExecutable(true, true)
    srcFile.delete()
    srcFile << shortcutFile.bytes   
    srcFile.setExecutable(true, true)
  }
}