move to aspnet core images

Dockerfile

@@ -1,21 +1,20 @@
-FROM microsoft/dotnet:2.0-sdk-stretch AS build-env
+FROM microsoft/aspnetcore-build:2.0.5-2.1.4 AS build-env
 
 WORKDIR /app
 
 # Copy csproj and restore as distinct layers
 COPY  ./src/Hamuste.csproj ./
-RUN dotnet add package ILLink.Tasks -v 0.1.4-preview-981901 -s https://dotnet.myget.org/F/dotnet-core/api/v3/index.json &&\
-    dotnet restore
+RUN dotnet restore
 
 # Copy everything else and build
 COPY  ./src ./
-RUN dotnet publish -c Release -o out -r linux-x64
+RUN dotnet publish -c Release -o ./obj/Docker/publish
 
 # Build runtime image
-FROM microsoft/dotnet:2.0-runtime-deps
+FROM microsoft/aspnetcore:2.0.8 as release
 RUN groupadd -r dotnet && useradd --no-log-init -r -g dotnet -d /home/dotnet -ms /bin/bash dotnet
 USER dotnet
 WORKDIR /home/dotnet/app
 ENV ASPNETCORE_URLS=http://+:9999
-COPY --chown=dotnet:dotnet --from=build-env /app/out ./
-ENTRYPOINT ["./Hamuste"]
+COPY --from=build-env /app/obj/Docker/publish .
+ENTRYPOINT ["dotnet", "Hamuste.dll"]