refactor: simply builder_instance_args array construction

Co-authored-by: Matías Bellone <toote@users.noreply.github.com>

Author: tomowatt

hooks/pre-command

@@ -19,9 +19,7 @@ fi
 
 if [[ "${builder_create}" == "true" ]]; then
     if ! builder_instance_exists "${builder_name}"; then
-        builder_instance_args=()
-
-        builder_instance_args+=(--name "${builder_name}")
+        builder_instance_args=(--name "${builder_name}")
 
         build_driver="$(plugin_read_config BUILDER_DRIVER "")"
         valid_drivers="docker-container|kubernetes|remote"