Help for creating a local repository with bootable usb

[mangone]

Hello, Thanks to anyone who wants to help to solve my problem:
I installed CentOS-7.6 BM on a NUC with a bootable USB key and I try to create a deposit locally with this usb key and I cant realize what i hope.
Do you have a procedure or tutorial that could help me

Thank you in advance

[TrevorH]

I installed CentOS-7.6 BM

First, why 7.6? It's already out of date as 7.7 has been out for months.

Also, what is "BM"?

And what are you actually trying to do because it's not clear?

[dunch]

Bare Metal? Or Bowel Movement maybe.

[mangone]

Thank you for your answers.
7.6 because my employer asks to install this version.
BM for me means Bare Metal
Remaining at your disposal for any solution

[mangone]

I'm trying to install Local repository with the bootable usb that was used for installation

Thank you

[TrevorH]

7.7 is out and there are significant security vulnerabilities that have been patched since then. Updating is not optional unless you have a machine that has no network connection and lives in a locked room!