Add support for GraalVM Enterprise Edition.

Fixes #5.

src/gu.ts

@@ -2,6 +2,7 @@ import {GRAALVM_PLATFORM} from './constants'
 import {exec} from '@actions/exec'
 import {join} from 'path'
 
+const BASE_FLAGS = ['--non-interactive', 'install', '--no-progress']
 const COMPONENT_TO_POST_INSTALL_HOOK = new Map<string, Map<string, string>>([
   [
     'linux',
@@ -21,10 +22,16 @@ const COMPONENT_TO_POST_INSTALL_HOOK = new Map<string, Map<string, string>>([
 ])
 
 export async function setUpGUComponents(
+  gdsToken: string,
   graalVMHome: string,
   components: string[]
 ): Promise<void> {
-  await exec('gu', ['install', '--no-progress'].concat(components))
+  const optionalFlags = []
+  if (gdsToken.length > 0) {
+    optionalFlags.push('--token', gdsToken)
+  }
+
+  await exec('gu', BASE_FLAGS.concat(optionalFlags, components))
 
   const platformHooks = COMPONENT_TO_POST_INSTALL_HOOK.get(GRAALVM_PLATFORM)
   if (platformHooks) {