feat: add build service account argument (#130)

Author: caetano-colin

README.md

@@ -46,6 +46,7 @@ Functional examples are included in the
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | build\_env\_variables | User-provided build-time environment variables | `map(string)` | `null` | no |
+| build\_service\_account | Cloud Function Build Service Account Id. This is The fully-qualified name of the service account to be used for building the container. | `string` | `null` | no |
 | description | Short description of the function | `string` | `null` | no |
 | docker\_repository | User managed repository created in Artifact Registry optionally with a customer managed encryption key. | `string` | `null` | no |
 | entrypoint | The name of the function (as defined in source code) that will be executed. Defaults to the resource name suffix, if not specified | `string` | n/a | yes |

main.tf

@@ -28,6 +28,7 @@ resource "google_cloudfunctions2_function" "function" {
     runtime               = var.runtime
     entry_point           = var.entrypoint
     environment_variables = var.build_env_variables
+    service_account       = var.build_service_account
 
     source {
       dynamic "storage_source" {

variables.tf

@@ -155,3 +155,9 @@ variable "members" {
     error_message = "The supported keys are invokers and developers."
   }
 }
+
+variable "build_service_account" {
+  type        = string
+  description = "Cloud Function Build Service Account Id. This is The fully-qualified name of the service account to be used for building the container."
+  default     = null
+}