We now have a preview release of Bulk Executor Library 2.x with support for .NET Standard for available for review.
Download the latest preview version here. https://docs.microsoft.com/en-us/azure/cosmos-db/sql-api-sdk-bulk-executor-dot-net
And please provide feedback here,
Thank you.Øyle commented
This, or a .net standard dependency is needed to be able to run in Azure Functions v2.