.

main.tf

@@ -3,4 +3,10 @@
 module "storage" {
   source = "./modules/storage"
   project_id = var.project_id
+  
+}
+
+module "instance" {
+  source = "./modules/instances"
+
 }

modules/storage/main.tf

@@ -9,7 +9,7 @@ resource "google_storage_bucket_object" "startup_script" {
   bucket = google_storage_bucket.fancy_store.name
   source = "${path.module}/startup-script.sh"
   content_type = "text/plain"
-}
-variable "project_id" {
+  
+  depends_on = [google_storage_bucket.fancy_store]
 
 }