make fallback backend a var (#27)

* make fallback backend a var

README.md

@@ -42,6 +42,8 @@ No Modules.
 
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
+| backend\_repo | repository for the default backend app | `string` | `"ministryofjustice/cloud-platform-custom-error-pages"` | no |
+| backend\_tag | tag of the default backend app | `string` | `"0.6"` | no |
 | cluster\_domain\_name | The cluster domain used for externalDNS annotations and certmanager | `any` | n/a | yes |
 | controller\_name | Will be used as the ingress controller name and the class annotation | `string` | n/a | yes |
 | default\_cert | Useful if you want to use a default certificate for your ingress controller. Format: namespace/secretName | `string` | `"ingress-controllers/default-certificate"` | no |

main.tf

@@ -82,6 +82,8 @@ data "template_file" "nginx_ingress_default_certificate" {
     alt_name          = var.is_live_cluster ? format("- '*.%s'", var.live_domain) : ""
     apps_alt_name     = var.is_live_cluster ? format("- '*.apps.%s'", var.live_domain) : ""
     live1_dns         = var.live1_cert_dns_name
+    backend_repo      = var.backend_repo
+    backend_tag       = var.backend_tag
   }
 }
 

templates/values.yaml.tpl

@@ -182,8 +182,8 @@ defaultBackend:
   enabled: true
   name: default-backend
   image:
-    repository: ministryofjustice/cloud-platform-custom-error-pages
-    tag: "0.6"
+    repository: "${backend_repo}"
+    tag: "${backend_tag}"
 
 rbac:
   create: true

variables.tf

@@ -18,6 +18,16 @@ variable "live1_cert_dns_name" {
   default     = ""
 }
 
+variable "backend_repo" {
+  description = "repository for the default backend app"
+  default     = "ministryofjustice/cloud-platform-custom-error-pages"
+}
+
+variable "backend_tag" {
+  description = "tag of the default backend app"
+  default     = "0.6"
+}
+
 variable "replica_count" {
   type        = string
   description = "Number of replicas set in deployment"