Add backend to monitore the app in a desktop app

backend/Dockerfile

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+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+WORKDIR /src
+COPY ["TravelMate.Backend.csproj", "./"]
+RUN dotnet restore "TravelMate.Backend.csproj"
+COPY . .
+WORKDIR "/src/."
+RUN dotnet build "TravelMate.Backend.csproj" -c Release -o /app/build
+
+FROM build AS publish
+RUN dotnet publish "TravelMate.Backend.csproj" -c Release -o /app/publish /p:UseAppHost=false
+
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+EXPOSE 8080
+ENV ASPNETCORE_URLS=http://+:8080
+ENTRYPOINT ["dotnet", "TravelMate.Backend.dll"]