Terraform 0.12 (#20)

* Terraform 0.12

demo-4/instance.tf

@@ -1,10 +1,12 @@
 resource "aws_instance" "example" {
-  ami = "${lookup(var.AMIS, var.AWS_REGION)}"
+  ami           = var.AMIS[var.AWS_REGION]
   instance_type = "t2.micro"
   provisioner "local-exec" {
-     command = "echo ${aws_instance.example.private_ip} >> private_ips.txt"
+    command = "echo ${aws_instance.example.private_ip} >> private_ips.txt"
   }
 }
+
 output "ip" {
-    value = "${aws_instance.example.public_ip}"
+  value = aws_instance.example.public_ip
 }
+

demo-4/provider.tf

@@ -1,3 +1,4 @@
-provider "aws" { 
-    region = "${var.AWS_REGION}"
+provider "aws" {
+  region = var.AWS_REGION
 }
+

demo-4/vars.tf

@@ -1,11 +1,13 @@
 variable "AWS_REGION" {
   default = "eu-west-1"
 }
+
 variable "AMIS" {
-  type = "map"
+  type = map(string)
   default = {
     us-east-1 = "ami-13be557e"
     us-west-2 = "ami-06b94666"
     eu-west-1 = "ami-844e0bf7"
   }
 }
+

demo-4/versions.tf

@@ -0,0 +1,4 @@
+
+terraform {
+  required_version = ">= 0.12"
+}