Allow injecting the GitHub owner for Cloud Build repo mapping

Author: roger2hk

deployment/live/gcp/cloudbuild/terragrunt.hcl

@@ -3,10 +3,11 @@ terraform {
 }
 
 locals {
-  env        = path_relative_to_include()
-  project_id = get_env("GOOGLE_PROJECT", "static-ct")
-  location   = get_env("GOOGLE_REGION", "us-central1")
-  base_name  = get_env("TESSERA_BASE_NAME", "${local.env}-cloudbuild")
+  env          = path_relative_to_include()
+  project_id   = get_env("GOOGLE_PROJECT", "static-ct")
+  location     = get_env("GOOGLE_REGION", "us-central1")
+  base_name    = get_env("TESSERA_BASE_NAME", "${local.env}-cloudbuild")
+  github_owner = get_env("GITHUB_OWNER", "transparency-dev")
 }
 
 remote_state {

deployment/modules/gcp/cloudbuild/main.tf

@@ -76,7 +76,7 @@ resource "google_cloudbuild_trigger" "build_trigger" {
   location        = var.location
 
   github {
-    owner = "transparency-dev"
+    owner = var.github_owner
     name  = "static-ct"
     push {
       branch = "^main$"

deployment/modules/gcp/cloudbuild/variables.tf

@@ -17,3 +17,8 @@ variable "docker_env" {
   description = "Unique identifier for the Docker env, e.g. dev or ci or prod"
   type        = string
 }
+
+variable "github_owner" {
+  description = "GitHub owner used in Cloud Build trigger repository mapping"
+  type        = string
+}