add ad services and Docker configuration for web app

Dockerfile

@@ -0,0 +1,28 @@
+# Stage 1: Build the Flutter web app
+FROM ghcr.io/cirruslabs/flutter:stable AS build
+
+WORKDIR /app
+
+# Copy pubspec files and get dependencies
+COPY pubspec.yaml pubspec.lock ./
+RUN flutter pub get
+
+# Copy the rest of the app
+COPY . .
+
+# Build web app
+RUN flutter build web --release --web-renderer html
+
+# Stage 2: Serve with nginx
+FROM nginx:alpine
+
+# Copy the built web app from build stage
+COPY --from=build /app/build/web /usr/share/nginx/html
+
+# Copy custom nginx config
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+# Expose port
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]