refactor: migrate from nginx to aspnet runtime

src/FrontOffice.Main/Dockerfile

@@ -1,24 +1,15 @@
 FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
 WORKDIR /src
-COPY ["FrontOffice.Main/NuGet.config", "NuGet.config"]
-COPY ["FrontOffice.Main/FrontOffice.Main.csproj", "FrontOffice.Main/"]
-RUN dotnet restore "FrontOffice.Main/FrontOffice.Main.csproj" --configfile NuGet.config
-COPY . .
-WORKDIR "/src/FrontOffice.Main"
-RUN dotnet publish "./FrontOffice.Main.csproj" -c Release -o /app/publish
+COPY src/*.sln ./ 2>/dev/null || true
+COPY src/*/*.csproj ./
+RUN for file in *.csproj; do mkdir -p "${file%.*}" && mv "$file" "${file%.*}/"; done 2>/dev/null || true
+RUN dotnet restore "FrontOffice/FrontOffice.csproj" || dotnet restore
+COPY src/ ./
+RUN dotnet publish "FrontOffice/FrontOffice.csproj" -c Release -o /app/publish
 
-FROM nginx:alpine AS final
-WORKDIR /usr/share/nginx/html
-COPY --from=build /app/publish/wwwroot .
-COPY <<'NGINX_CONF' /etc/nginx/conf.d/default.conf
-server {
-    listen 80;
-    server_name _;
-    
-    location / {
-        root /usr/share/nginx/html;
-        try_files $uri $uri/ /index.html;
-    }
-}
-NGINX_CONF
-EXPOSE 80
+FROM mcr.microsoft.com/dotnet/aspnet:9.0 AS runtime
+WORKDIR /app
+COPY --from=build /app/publish .
+ENV ASPNETCORE_URLS=http://+:8080
+EXPOSE 8080
+ENTRYPOINT ["dotnet", "FrontOffice.dll"]