Re-add samples removed to mitigate container failure notifications

[danieljurek]

Originally done here -- https://github.com/Azure/azure-sdk-for-cpp/pull/3621/files

We'll need to fix issues in Dockerfiles to avoid warnings. Work with @danieljurek if you have questions.

Guidance is here (in short parameterize the Dockerfile): https://eng.ms/docs/more/containers-secure-supply-chain/approved-images#how-to-handle-externally-visible-dockerfiles ... In short, you should be able to put the image name in an ARG