Update backend/Dockerfile

backend/Dockerfile

@@ -0,0 +1,22 @@
+# backend/Dockerfile
+
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
+WORKDIR /app
+EXPOSE 8080
+
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+WORKDIR /src
+
+# Kopier hele backend-mappa (enkelt og robust)
+COPY . .
+
+# Restore på løsningen
+RUN dotnet restore MinAttest.Api.sln
+
+# Publish API-prosjektet
+RUN dotnet publish src/MinAttest.Api/MinAttest.Api.csproj -c Release -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=build /app/publish .
+ENTRYPOINT ["dotnet", "MinAttest.Api.dll"]