Make Private Networking optional

data.digitalocean_vpc.this.tf

@@ -1,3 +1,4 @@
 data "digitalocean_vpc" "this" {
-  name = var.vpc_name
+  count = var.use_vpc > 0 ? 1 : 0
+  name  = var.vpc_name
 }

resource.digitalocean_droplet.this.tf

@@ -4,10 +4,10 @@ resource "digitalocean_droplet" "this" {
   ipv6               = "true"
   monitoring         = "true"
   name               = "${var.host_name}.${var.domain_name}"
-  private_networking = "true"
+  private_networking = var.use_vpc > 0 ? "true" : "false"
   region             = var.region
   ssh_keys           = var.ssh_keys
   size               = var.size
   tags               = var.tags
-  vpc_uuid           = data.digitalocean_vpc.this.id
+  vpc_uuid           = var.use_vpc > 0 ? data.digitalocean_vpc.this[0].id : ""
 }

terraform.tf

@@ -2,7 +2,7 @@ terraform {
   required_providers {
     digitalocean = {
       source  = "digitalocean/digitalocean"
-      version = ">= 2.7.0"
+      version = ">= 2.8.0"
     }
   }
   required_version = ">= 0.14"

variable.use_vpc.tf

@@ -0,0 +1,4 @@
+variable "use_vpc" {
+  default = 0
+  type    = number
+}