mod dockerfile

Dockerfile

@@ -18,10 +18,11 @@ RUN apt-get update && apt-get install -y \
 # Install Flutter
 ENV FLUTTER_HOME=/usr/local/flutter
 ENV PATH="${FLUTTER_HOME}/bin:${PATH}"
+ENV TAR_OPTIONS=--no-same-owner
 
 RUN git clone https://github.com/flutter/flutter.git ${FLUTTER_HOME} -b stable --depth 1 && \
     flutter config --enable-web --no-analytics && \
-    flutter doctor -v
+    flutter precache --web
 
 # Set working directory
 WORKDIR /app
@@ -34,8 +35,8 @@ RUN flutter pub get
 
 COPY . .
 
-# Build web app (downloads web artifacts on-demand without gradle)
-RUN flutter build web --release --web-renderer canvaskit
+# Build web app (web-only artifacts; suppress wasm dry-run warnings)
+RUN flutter build web --release --no-wasm-dry-run
 
 # Production stage - Nginx
 FROM nginx:alpine