add gitlab auth

coder-base/main.tf

@@ -21,6 +21,10 @@ data "coder_provisioner" "me" {}
 data "coder_workspace" "me" {}
 data "coder_workspace_owner" "me" {}
 
+data "coder_external_auth" "gitlab" {
+  id = "primary-gitlab"
+}
+
 data "coder_parameter" "repo_url" {
   name        = "Repository URL"
   description = "Git repository to clone when workspace is created (public repo only)"