diff --git a/modules/Dockerfile.alpine b/modules/Dockerfile.alpine
index 9b305fff5b7f5f0c98fd21f682b6e0068ec17b7e..0ea49f5ce9a9b6d033dad256cdfa041f7b55f489 100644
--- a/modules/Dockerfile.alpine
+++ b/modules/Dockerfile.alpine
@@ -1,5 +1,5 @@
 ARG NGINX_FROM_IMAGE=nginx:mainline-alpine
-FROM ${NGINX_FROM_IMAGE} as builder
+FROM ${NGINX_FROM_IMAGE} AS builder
 
 ARG ENABLED_MODULES