Replace submodules with full folder contents

fuse-starter-v20.0.0/Dockerfile

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+# Stage 1: Build Angular app
+FROM node:18-alpine as build
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+RUN npm run build --configuration production
+
+# Stage 2: Serve via Nginx
+FROM nginx:alpine
+COPY --from=build /app/dist /usr/share/nginx/html
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]