Unable to load the service index for source https://api.nuget.org/v3/index.json. [C:\app\aspnetapp.csproj]

Question

https://github.com/dotnet/dotnet-docker-samples/tree/master/aspnetapp

Docker command docker build -t aspnetapp.

I am getting an error for docker bui

Answer 1

Had the same issue, the problem was a missing dependency used by NuGet.

I am using the microsoft/dotnet:sdk image, and it works after installing libcurl3 to my image.

Try adding RUN apt-get update && apt-get install -y libcurl3 to your Dockerfile before restoring.

if it doesn't work, try restarting your Docker instance.

edit: if that doesn't help you, there is this open issue on the NuGet github where some people are trying to solve the same problem.

edit2:added Ignas solution: restarting docker instance.