Add customer communication system

LittleShop/Dockerfile

@@ -0,0 +1,38 @@
+# Build stage
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
+WORKDIR /src
+
+# Copy project file and restore dependencies
+COPY LittleShop.csproj .
+RUN dotnet restore
+
+# Copy all source files and build
+COPY . .
+RUN dotnet publish -c Release -o /app/publish
+
+# Runtime stage
+FROM mcr.microsoft.com/dotnet/aspnet:9.0
+WORKDIR /app
+
+# Install curl for health checks
+RUN apt-get update && apt-get install -y curl && rm -rf /var/lib/apt/lists/*
+
+# Copy published app
+COPY --from=build /app/publish .
+
+# Create directories for uploads and database
+RUN mkdir -p /app/data /app/wwwroot/uploads/products /app/logs
+
+# Set environment variables
+ENV ASPNETCORE_URLS=http://+:5000
+ENV ASPNETCORE_ENVIRONMENT=Production
+
+# Expose port
+EXPOSE 5000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:5000/api/test || exit 1
+
+# Run the application
+ENTRYPOINT ["dotnet", "LittleShop.dll"]