Update Dockerfile: add proxy env vars and copy NuGet.config

Dockerfile

@@ -1,13 +1,19 @@
 FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
+
+ARG HTTP_PROXY
+ARG HTTPS_PROXY
+
+ENV HTTP_PROXY=${HTTP_PROXY}
+ENV HTTPS_PROXY=${HTTPS_PROXY}
+ENV http_proxy=${HTTP_PROXY}
+ENV https_proxy=${HTTPS_PROXY}
+
 WORKDIR /src
 
-# Copy all source files
 COPY src/ ./
+COPY NuGet.config ./
 
-# Restore dependencies
 RUN dotnet restore "FrontOffice.BFF.WebApi/FrontOffice.BFF.WebApi.csproj"
-
-# Build and publish
 RUN dotnet publish "FrontOffice.BFF.WebApi/FrontOffice.BFF.WebApi.csproj" -c Release -o /app/publish --no-restore
 
 FROM mcr.microsoft.com/dotnet/aspnet:9.0 AS runtime