How do you architect DI in a shared Microservices library?

Shared microservice libraries must be agnostic to the specific DI container the host application uses.

A shared library should not force a dependency on Autofac or Ninject. Instead, it should rely on standard abstractions (like Microsoft.Extensions.DependencyInjection.Abstractions in C#) and expose extension methods that allow the host to register the library's internal dependencies safely.