Terraform 0.12 (#20)

* Terraform 0.12

docker-demo-3/myapp.tf

@@ -1,33 +1,35 @@
 # app
 
 data "template_file" "myapp-task-definition-template" {
-  template               = "${file("templates/app.json.tpl")}"
-  vars {
-    REPOSITORY_URL = "${replace("${aws_ecr_repository.myapp.repository_url}", "https://", "")}"
-    APP_VERSION = "${var.MYAPP_VERSION}"
+  template = file("templates/app.json.tpl")
+  vars = {
+    REPOSITORY_URL = replace(aws_ecr_repository.myapp.repository_url, "https://", "")
+    APP_VERSION    = var.MYAPP_VERSION
   }
 }
 
 resource "aws_ecs_task_definition" "myapp-task-definition" {
   family                = "myapp"
-  container_definitions = "${data.template_file.myapp-task-definition-template.rendered}"
+  container_definitions = data.template_file.myapp-task-definition-template.rendered
 }
 
 resource "aws_ecs_service" "myapp-service" {
-  count = "${var.MYAPP_SERVICE_ENABLE}"
-  name = "myapp"
-  cluster = "${aws_ecs_cluster.example-cluster.id}"
-  task_definition = "${aws_ecs_task_definition.myapp-task-definition.arn}"
-  desired_count = 1
-  iam_role = "${aws_iam_role.ecs-service-role.arn}"
-  depends_on = ["aws_iam_policy_attachment.ecs-service-attach1"]
+  count           = var.MYAPP_SERVICE_ENABLE
+  name            = "myapp"
+  cluster         = aws_ecs_cluster.example-cluster.id
+  task_definition = aws_ecs_task_definition.myapp-task-definition.arn
+  desired_count   = 1
+  iam_role        = aws_iam_role.ecs-service-role.arn
+  depends_on      = [aws_iam_policy_attachment.ecs-service-attach1]
 
   load_balancer {
-    elb_name = "${aws_elb.myapp-elb.name}"
+    elb_name       = aws_elb.myapp-elb.name
     container_name = "myapp"
     container_port = 3000
   }
-  lifecycle { ignore_changes = ["task_definition"] }
+  lifecycle {
+    ignore_changes = [task_definition]
+  }
 }
 
 # load balancer
@@ -35,29 +37,29 @@ resource "aws_elb" "myapp-elb" {
   name = "myapp-elb"
 
   listener {
-    instance_port = 3000
+    instance_port     = 3000
     instance_protocol = "http"
-    lb_port = 80
-    lb_protocol = "http"
+    lb_port           = 80
+    lb_protocol       = "http"
   }
 
   health_check {
-    healthy_threshold = 3
+    healthy_threshold   = 3
     unhealthy_threshold = 3
-    timeout = 30
-    target = "HTTP:3000/"
-    interval = 60
+    timeout             = 30
+    target              = "HTTP:3000/"
+    interval            = 60
   }
 
-  cross_zone_load_balancing = true
-  idle_timeout = 400
-  connection_draining = true
+  cross_zone_load_balancing   = true
+  idle_timeout                = 400
+  connection_draining         = true
   connection_draining_timeout = 400
 
-  subnets = ["${aws_subnet.main-public-1.id}","${aws_subnet.main-public-2.id}"]
-  security_groups = ["${aws_security_group.myapp-elb-securitygroup.id}"]
+  subnets         = [aws_subnet.main-public-1.id, aws_subnet.main-public-2.id]
+  security_groups = [aws_security_group.myapp-elb-securitygroup.id]
 
-  tags {
+  tags = {
     Name = "myapp-elb"
   }
 }