Add the local dvd as a repository

# mkdir /dvd
# mount /dev/sr0 /dvd

# zypper ar file:/dvd dvd
Adding repository 'dvd' ....................................................................................................[done]
Repository 'dvd' successfully added

URI         : file:/dvd
Enabled     : Yes
GPG Check   : Yes
Autorefresh : No
Priority    : 99 (default priority)

Repository priorities in effect:                                                                  (See 'zypper lr -P' for details)
      99 (default priority) :  2 repositories
     100 (lowered priority) :  1 repository


 # zypper lr
Repository priorities in effect:                                                                  (See 'zypper lr -P' for details)
      99 (default priority) :  2 repositories
     100 (lowered priority) :  1 repository

# | Alias                             | Name                              | Enabled | GPG Check | Refresh
--+-----------------------------------+-----------------------------------+---------+-----------+--------
1 | Basesystem-Module_15.2-0          | Basesystem-Module 15.2-0          | Yes     | (r ) Yes  | No
2 | Live-Patching_15.2-0              | Live-Patching 15.2-0              | No      | ----      | ----
3 | SLES15-SP2-15.2-0                 | SLES15-SP2-15.2-0                 | Yes     | (r ) Yes  | No
4 | Server-Applications-Module_15.2-0 | Server-Applications-Module 15.2-0 | No      | ----      | ----
5 | Web-Scripting-Module_15.2-0       | Web-Scripting-Module 15.2-0       | No      | ----      | ----
6 | dvd                               | dvd                               | Yes     | ( p) Yes  | No