Про ликвидацию объектов при использовании внедрения зависимости в .NET Core
https://www.jerriepelser.com/blog/disposing-services-using-dependency-injection-net-core-console-apps/
https://www.jerriepelser.com/blog/disposing-services-using-dependency-injection-net-core-console-apps/
Jerriepelser
Disposing of services when using Dependency Injection with .NET Core console apps
Look at how you can ensure that services are disposed of when using dependency injection with .NET Core Console applications.