diff --git a/Dockerfile b/Dockerfile
index c4cd6f8c4..b52b8d6ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 # Stage 1, Build Backend
 #
 
-FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:8.0 as backend
+FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:8.0 AS backend
 
 ARG SQUIDEX__BUILD__VERSION=7.0.0
 
@@ -43,7 +43,7 @@ RUN dotnet tool install --tool-path /tools dotnet-counters \
 #
 # Stage 2, Build Frontend
 #
-FROM squidex/frontend-build:20.9 as frontend
+FROM squidex/frontend-build:20.9 AS frontend
 
 WORKDIR /src