feat(comfyui): add Dockerfile, playbook, and Terraform configurations for ComfyUI setup

terraform/modules/apps/nginx-reverse-proxy/variables.tf

@@ -30,7 +30,7 @@ variable "services" {
   description = "A list of services to be deployed"
   type = map(object({
     fqdn            = list(string)
-    upstream        = string
+    upstream        = optional(string, "")
     resolver        = optional(string, "")
     default_headers = optional(map(string), {}),
     http_port       = optional(number, 80)
@@ -53,4 +53,5 @@ variable "auth_token" {
   description = "The authentication token to use for the reverse proxy"
   type        = string
   sensitive   = true
+  default     = ""
 }