FROM mcr.microsoft.com/dotnet/core/sdk:3.1 AS build
WORKDIR /app

# Separate layers here to avoid redoing dependencies on code change.
COPY *.sln .
COPY *.csproj .
RUN dotnet restore

# Now the code.
COPY . .
RUN dotnet publish -c Release -o out

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1 AS runtime
WORKDIR /app
COPY --from=build /app/out .

ENTRYPOINT ["dotnet", "docker_exporter.dll"]