Azure Pipeline and Deploy of a single DLL to existing App Service web app?

We have a need to deploy single library files (dll) from a build pipeline to an existing Web App in an App Service. The library files are then picked up by the app when it is restarted using reflection.

I have not been able to find any example yaml or Deployment scripts that meet my needs. Is it possible to deploy a single binary to an app service this way?

Is anyone aware of a script or article on how to do this?