diff --git a/Dockerfile b/Dockerfile
index 6318a12..2b8977d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,7 @@ COPY . ./
 RUN dotnet publish -c Release -o out
 
 # --- Stage 2: Runtime (Das fertige, schlanke Image) ---
-FROM ://microsoft.com
+FROM mcr.microsoft.com/dotnet/aspnet:8.0
 WORKDIR /app
 
 # 3. Den vorinstallierten User 'app' von Microsoft nutzen