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

In my case, in Dockerfile, I have

FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build

and

FROM mcr.microsoft.com/dotnet/core/aspnet:2.2

But I only have .net 2.1 installed (view by dotnet --list-sdks). So I have to change 2.2 to 2.1 to make it work.