RHEL v7: Adding Repo

#mount rhel7 iso cdrom

[root@rhel7 ~]# mkdir /mnt/rhel7-repo-iso
[root@rhel7 ~]# mount /dev/cdrom /mnt/rhel7-repo-iso/
mount: /dev/sr0 is write-protected, mounting read-only

 cp -p /mnt/cdrom/media.repo /etc/yum.repos.d/media.repo

#Create yum repository 

[root@rhel7 ~]# vi /etc/yum.repos.d/media.repo
[root@rhel7 ~]# cat /etc/yum.repos.d/media.repo
[RHEL_7_Disc]
name=RHEL_7_x86_64_Disc
baseurl="file:///media/rhel7-repo-iso/"
gpgcheck=0

# yum repolist