variables { foo = "value" // my_secret = "foo" // image_name = "foo-image-{{user `my_secret`}}" } variable "image_id" { type = string default = "image-id-default" } variable "port" { type = number default = 42 } variable "availability_zone_names" { type = list(string) default = ["a", "b", "c"] } locals { feefoo = "${var.foo}_${var.image_id}" }