fix: Use go-tfe client address for registry URL.

Author: paladin-devops

registry_module.go

@@ -635,23 +635,28 @@ func (r *registryModules) Read(ctx context.Context, moduleID RegistryModuleID) (
 	return rm, nil
 }
 
-// ReadRegistry fetches a registry module from the Terraform Registry.
+// ReadTerraformRegistryModule fetches a registry module from the Terraform Registry.
 func (r *registryModules) ReadTerraformRegistryModule(ctx context.Context, moduleID RegistryModuleID, version string) (*TerraformRegistryModule, error) {
-	u := fmt.Sprintf(
-		"https://app.terraform.io/api/registry/v1/modules/%s/%s/%s/%s",
+	u, err := url.JoinPath(r.client.baseURL.Scheme+"://"+r.client.baseURL.Host, fmt.Sprintf("api/registry/v1/modules/%s/%s/%s/%s",
 		moduleID.Namespace,
 		moduleID.Name,
 		moduleID.Provider,
 		version,
-	)
+	))
+	if err != nil {
+		return nil, err
+	}
+
 	if moduleID.RegistryName == PublicRegistry {
-		u = fmt.Sprintf(
-			"https://app.terraform.io/api/registry/public/v1/modules/%s/%s/%s/%s",
+		u, err = url.JoinPath(r.client.baseURL.Scheme+"://"+r.client.baseURL.Host, fmt.Sprintf("api/registry/public/v1/modules/%s/%s/%s/%s",
 			moduleID.Namespace,
 			moduleID.Name,
 			moduleID.Provider,
 			version,
-		)
+		))
+		if err != nil {
+			return nil, err
+		}
 	}
 	req, err := r.client.NewRequest("GET", u, nil)
 	if err != nil {