added changes to template

infrastructure/terraform/lambda/_template/main.tf

@@ -4,7 +4,7 @@ module "lambda" {
   name  = REPLACE ME #"address2uprn" for example
   stage = var.stage
 
-  image_uri = var.image_uri
+  image_uri = local.image_uri
 
 
   environment = {

infrastructure/terraform/lambda/_template/variables.tf

@@ -3,13 +3,21 @@ variable "lambda_name" {
   description = "Logical name of the lambda (e.g. address2uprn)"
 }
 
-variable "image_uri" {
-  type        = string
-  description = "Full ECR image URI including digest"
-}
-
 variable "stage" {
   description = "Deployment stage (e.g. dev, prod)"
   type        = string
 }
+variable "ecr_repo_url" {
+  type        = string
+  description = "ECR repository URL (no tag, no digest)"
+}
 
+variable "image_digest" {
+  type        = string
+  description = "Image digest (sha256:...)"
+}
+
+
+locals {
+  image_uri = "${var.ecr_repo_url}@${var.image_digest}"
+}