FROM mcr.microsoft.com/dotnet/core/sdk:3.1-alpine 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 -r linux-musl-x64 -c Release -o out FROM mcr.microsoft.com/dotnet/core/runtime-deps:3.1-alpine AS runtime WORKDIR /app COPY --from=build /app/out . ENTRYPOINT ["./docker_exporter"]