FROM mcr.microsoft.com/dotnet/core/sdk:3.0 AS build-env WORKDIR /app # Copy csproj and restore as distinct layers COPY *.csproj ./ RUN dotnet restore # Copy everything else and build COPY . ./ RUN dotnet publish -c Release -o out # Build runtime image FROM mcr.microsoft.com/dotnet/core/aspnet:3.0 WORKDIR /app COPY --from=build-env /app/out . ENTRYPOINT ["dotnet", "mymvcweb.dll"] ENV ASPNETCORE_URLS http://+:5000 EXPOSE 5000