add js file

action.yml

@@ -19,4 +19,5 @@ branding:
   icon: 'umbrella'
 runs:
   using: 'node12'
-  main: 'entrypoint.sh'
+  main: 'main.js'
+  #plugin: 'checkout'

entrypoint.sh

@@ -1,3 +0,0 @@
-#!/bin/sh
-
-echo "Hello World"

main.js

@@ -0,0 +1 @@
+console.log('Hello World')