docs: improve standalone distribution example

Author: JuroUhlar

examples/standalone-distribution/cloudfront_distribution.tf

@@ -46,9 +46,9 @@ resource "aws_cloudfront_distribution" "fpjs_cloudfront_distribution" {
     }
   }
 
-  aliases = ["${var.subdomain}.${var.root_domain}"]
+  aliases = [var.proxy_subdomain_domain]
   viewer_certificate {
-    acm_certificate_arn = "arn:aws:acm:us-east-1:013357491684:certificate/c3ffee8c-071b-4ff8-bec2-e222eff602bc"
+    acm_certificate_arn = var.certificate_arn
     ssl_support_method  = "sni-only"
   }
 
@@ -64,7 +64,7 @@ resource "aws_cloudfront_distribution" "fpjs_cloudfront_distribution" {
 # (comment this out if you don't want to do that for now)
 resource "aws_route53_record" "cloudfront_terraform_new_distribution_record" {
   zone_id = var.domain_zone_id
-  name    = "${var.subdomain}.${var.root_domain}"
+  name    = var.proxy_subdomain_domain
   type    = "CNAME"
   ttl     = 300
   records = [aws_cloudfront_distribution.fpjs_cloudfront_distribution.domain_name]

examples/standalone-distribution/variables.tf

@@ -13,19 +13,18 @@ variable "fpjs_get_result_path" {
   type        = string
 }
 
-variable "subdomain" {
-  description = "The subdomain for the CloudFront distribution"
+variable "proxy_subdomain_domain" {
+  description = "The subdomain for the CloudFront distribution, including the root domain of your website, for example `metrics.yourwebsite.com`"
   type        = string
-  # default   = "metrics"
 }
 
-variable "root_domain" {
-  description = "The root domain for the CloudFront distribution"
-  type        = string
-  # default     = "yourwebsite.com"
-}
 
 variable "domain_zone_id" {
   description = "Zone ID of the domain for the CloudFront distribution"
   type        = string
 }
+
+variable "certificate_arn" {
+  description = "ARN of the domain certificate for the CloudFront distribution"
+  type        = string
+}