diff --git a/rust/Dockerfile.factory_ufs b/rust/Dockerfile.factory_ufs
index f9fc5a2..77897a5 100644
--- a/rust/Dockerfile.factory_ufs
+++ b/rust/Dockerfile.factory_ufs
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-FROM rust:alpine as builder
+FROM rust:alpine AS builder
 
 WORKDIR /usr/src/factory_installer
 COPY . .