Raw proxy repository pointing to sonatype public repository?

I want to know that it’s possible to create a raw proxy repository in my Nexus3 that points to Sonatype public repo.

Context: I have an ansible playbook that provision a Nexus instance, to do that, the playbook obtains nexus tar.gz from the official download place (linux download). Due to the worker where I execute ansible will no longer have internet access, I want to create an raw proxy repository that points to sonatype public repository.

But I was searching sonatype public repository for a while and I couldn’t find it, for that reason now I’m asking that is possible to do that or not.