erc 모듈화, vpc public dns 설정 등

modules/igw/main.tf

@@ -0,0 +1,7 @@
+resource "aws_internet_gateway" "gw" {
+  vpc_id = var.vpc_id
+
+  tags = {
+    Name = "main-igw"
+  }
+}

modules/igw/valiables.tf

@@ -0,0 +1,4 @@
+variable "vpc_id" {
+    description = "set vpc id"
+    type = string
+}