Requesting your help on below.

We have a requirement to setup Openstack in an isolated infra. We will not be provided with Internet. How can we set it up?

1. Can we have a local repository (Rocky, Universal, etc)created? If so how do we manage it? 

2. We have noticed lot of package dependencies while setting up Openstack Infra, so will creating a local repository help in an implementation when we do not have an internet. What is the success rate?

Thanks

Prem