DevOps for .Net Core/.Net Standard: Common CI Issues Solving

Recently got chances to work on Azure DevOps for Desktop (UWP/WPF/Desktop Bridge/MSIX) , and often need to CI/CD .Net Core and .Net Standard. Most of them are related to SDK setup, NuGet version update, TargetPlatform settings, or Code Sign Certificate trust. This article is to give quick references on how to solve common CI issues for this scenario.