Can I containerize an asp.net framework web application?

I know such questions have already been asked many times, but I am here with my scenario.

I have an asp.net web application with .net framework and SQL as backend

1. Using N-Layered architectured
2. No web services used.
3. Each instance has a separate database.

I want to know:

1. Can I containerize an asp.net framework web application into a windows container?
2. Do I need to change entire application to Azure Web Application?
3. If not, is it possible to deploy it directly over the cloud, on MS or any other, as we normally do in IIS?
4. If not, Is there any third party migration tool available to make my plain old web application cloud-compatible, without affecting existing codes?

Thanks in advance.