diff --git a/ecs_api.tf b/ecs_api.tf
index 05265c1..4fdb4a3 100644
--- a/ecs_api.tf
+++ b/ecs_api.tf
@@ -94,8 +94,9 @@ data "template_file" "api_service_container_definitions" {
 
   vars = {
     api_image_uri        = "${aws_ecr_repository.api.repository_url}:${var.api_container_tag}"
+    api_image_uri        = "${var.api_container_repo_url != "" ? var.api_container_repo_url : aws_ecr_repository.api.repository_url}:${var.api_container_tag}"
     config_var_prefix    = local.config_var_prefix
-    migrations_image_uri = "${aws_ecr_repository.migrations.repository_url}:${var.api_container_tag}"
+    migrations_image_uri = "${var.migrations_container_repo_url != "" ? var.migrations_container_repo_url : aws_ecr_repository.migrations.repository_url}:${var.api_container_tag}"
     listening_port       = var.api_listening_port
     logs_service_name    = aws_cloudwatch_log_group.api.name
     log_group_region     = var.aws_region
diff --git a/ecs_push.tf b/ecs_push.tf
index 06bd716..0c112af 100644
--- a/ecs_push.tf
+++ b/ecs_push.tf
@@ -81,7 +81,8 @@ data "template_file" "push_service_container_definitions" {
 
   vars = {
     config_var_prefix = local.config_var_prefix
-    image_uri         = "${aws_ecr_repository.push.repository_url}:${var.push_container_tag}"
+
+    image_uri         = "${var.push_container_repo_url != "" ? var.push_container_repo_url : aws_ecr_repository.push.repository_url}:${var.push_container_tag}"
     listening_port    = var.push_listening_port
     logs_service_name = aws_cloudwatch_log_group.push.name
     log_group_region  = var.aws_region
diff --git a/env-vars/deployables.tfvars b/env-vars/deployables.tfvars
new file mode 100644
index 0000000..9f2bc0d
--- /dev/null
+++ b/env-vars/deployables.tfvars
@@ -0,0 +1,22 @@
+
+authorizer_lambda_s3_bucket   = ""
+authorizer_lambda_s3_key      = ""
+callback_lambda_s3_bucket     = ""
+callback_lambda_s3_key        = ""
+cso_lambda_s3_bucket          = ""
+cso_lambda_s3_key             = ""
+exposures_lambda_s3_bucket    = ""
+exposures_lambda_s3_key       = ""
+settings_lambda_s3_bucket     = ""
+settings_lambda_s3_key        = ""
+stats_lambda_s3_bucket        = ""
+stats_lambda_s3_key           = ""
+token_lambda_s3_bucket        = ""
+token_lambda_s3_key           = ""
+
+push_container_repo_url       = ""
+api_container_repo_url        = ""
+migrations_container_repo_url = ""
+
+push_container_tag            = "latest"
+api_container_tag             = "latest"
diff --git a/variables.tf b/variables.tf
index 79d924b..f4ad879 100644
--- a/variables.tf
+++ b/variables.tf
@@ -399,12 +399,30 @@ variable "stats_lambda_s3_bucket" {
   default     = ""
 }
 
+variable "api_container_repo_url" {
+  description = "ECR repo to be deployed into ECS for the API container"
+  type        = string
+  default     = ""
+}
+
+variable "migrations_container_repo_url" {
+  description = "ECR repo to be deployed into ECS for the Migration container"
+  type        = string
+  default     = ""
+}
+
 variable "api_container_tag" {
   description = "ECR tag to be deployed into ECS for the API & Migration containers"
   type        = string
   default     = "latest"
 }
 
+variable "push_container_repo_url" {
+  description = "ECR repo to be deployed into ECS for the Push API container"
+  type        = string
+  default     = ""
+}
+
 variable "push_container_tag" {
   description = "ECR tag to be deployed into ECS for the Push API container"
   type        = string