Add frontend/minattest-app-host/Dockerfile

frontend/minattest-app-host/Dockerfile

@@ -0,0 +1,18 @@
+# frontend/minattest-app-host/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
+
+COPY . .
+
+RUN dotnet restore minattest-app-host.csproj
+RUN dotnet publish minattest-app-host.csproj -c Release -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=build /app/publish .
+ENTRYPOINT ["dotnet", "minattest-app-host.dll"]