Exit early when a required argument is not received

index.js

@@ -10,10 +10,12 @@ try {
     const file = core.getInput('file')
     if (!file) {
         core.setFailed('"file" is required')
+        process.exit(1)
     }
     const token = core.getInput('token')
     if (!token) {
         core.setFailed('"token" is required')
+        process.exit(1)
     }
 
     const machine_name = core.getInput('custom-machine-name') || os.hostname()