dotnet 清理 nuget 缓存
https://docs.microsoft.com/en-us/nuget/consume-packages/managing-the-global-packages-and-cache-folders
# Clear the 3.x+ cache (use either command) 清除3.x+缓存（使用任一命令）
dotnet nuget locals http-cache --clear
nuget locals http-cache -clear
# Clear the 2.x cache (NuGet CLI 3.5 and earlier only) 清除2.x缓存（仅限NuGet CLI 3.5及更早版本）
nuget locals packages-cache -clear
# Clear the global packages folder (use either command) 清除全局程序包文件夹（使用任一命令）
dotnet nuget locals global-packages --clear
nuget locals global-packages -clear
# Clear the temporary cache (use either command) 清除临时缓存（使用任一命令）
dotnet nuget locals temp --clear
nuget locals temp -clear
# Clear the plugins cache (use either command) 清除插件缓存（使用任一命令）
dotnet nuget locals plugins-cache --clear
nuget locals plugins-cache -clear
# Clear all caches (use either command) 清除所有缓存（使用任一命令）
dotnet nuget locals all --clear
nuget locals all -clear
