Add Kubernetes CI/CD pipeline for kub-stage

Dockerfile

@@ -0,0 +1,15 @@
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
+WORKDIR /src
+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 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"]