I'm currently on Ubuntu 20.10, when I create Classlib using dotnet new classlib, it works as expected. dotnet build builds, as net5.0 is written as TargetFramework in csproj file. But when I use dotnet ef migrations add Init, following error occures:
Build started...
Build succeeded.
It was not possible to find any compatible framework version The framework 'Microsoft.NETCore.App', version '2.0.0' was not found.
The following frameworks were found: 3.1.14 at [/usr/share/dotnet/shared/Microsoft.NETCore.App] 5.0.5 at [/usr/share/dotnet/shared/Microsoft.NETCore.App]
You can resolve the problem by installing the specified framework and/or SDK.
What am I doing wrong? Feel free to stating RTFM (but provide link or direction please).