fix: add Node.js to Docker build stage for frontend compilation

- Install Node.js 18.x in Docker build stage
- Add MongoDB DataProtection for Swarm compatibility
- Enables shared authentication keys across multiple replicas

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -2,6 +2,10 @@
 FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
 WORKDIR /src
 
+# Install Node.js for frontend build
+RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - \
+    && apt-get install -y nodejs
+
 # Copy csproj and restore as distinct layers
 COPY *.csproj ./
 RUN dotnet restore --runtime linux-arm64
@@ -22,7 +26,7 @@ RUN dotnet publish "QRRapidoApp.csproj" -c Release -o /app/publish \
 FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS final
 WORKDIR /app
 
-# Install libgdiplus for System.Drawing (se necessário para QR codes)
+# Install libgdiplus for System.Drawing (se necess<EFBFBD>rio para QR codes)
 RUN apt-get update && apt-get install -y libgdiplus && rm -rf /var/lib/apt/lists/*
 
 # Copy published app