Update main.tf

main.tf

+resource "null_resource" "network creation" {
+
+  provisioner "file" {
+    source      = "network_create"
+    destination = "/network_create"
+  }
+
+  provisioner "remote-exec" {
+    inline = [
+      "source network_create",
+    ]
+  }
+}
+
 # creates public and private keypair
 resource "openstack_compute_keypair_v2" "test-keypair" {
   name = "my-keypair"