Terraform 0.12 (#20)

* Terraform 0.12

docker-demo-1/ecr.tf

@@ -1,3 +1,4 @@
 resource "aws_ecr_repository" "myapp" {
   name = "myapp"
 }
+

docker-demo-1/output.tf

@@ -1,3 +1,4 @@
 output "myapp-repository-URL" {
-  value = "${aws_ecr_repository.myapp.repository_url}"
+  value = aws_ecr_repository.myapp.repository_url
 }
+

docker-demo-1/provider.tf

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

docker-demo-1/vars.tf

@@ -1,3 +1,4 @@
 variable "AWS_REGION" {
   default = "eu-west-1"
 }
+

docker-demo-1/versions.tf

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