diff --git a/Dockerfile--alpine.tmpl b/Dockerfile--alpine.tmpl
index 320e94f..24adf93 100644
--- a/Dockerfile--alpine.tmpl
+++ b/Dockerfile--alpine.tmpl
@@ -1,13 +1,13 @@
 ARG PYTHON_VERSION 
 
 # --------------------------------------------- base1
-FROM python:${PYTHON_VERSION}-alpine as base1
+FROM python:${PYTHON_VERSION}-alpine AS base1
 
 # --------------------------------------------- base1
-FROM base1 as base2
+FROM base1 AS base2
 
 # --------------------------------------------- final
-FROM base2 as final
+FROM base2 AS final
 
 RUN apk add bash