Download RHEL - https://access.redhat.com/downloads/content/rhel
sudo mkdir -p /media/rheldvd
sudo mount /dev/sr0 /media/rheldvd
# cat /etc/yum.repos.d/my.repo
[dvd-BaseOS]
name=DVD for RHEL - BaseOS
baseurl=file:///media/rheldvd/BaseOS
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[dvd-AppStream]
name=DVD for RHEL - AppStream
baseurl=file:///media/rheldvd/AppStream
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
# Disable RHEL repos
sudo subscription-manager repos --disable=rhel-8-for-x86_64-appstream-rpms
sudo subscription-manager repos --disable=rhel-8-for-x86_64-baseos-rpms
sudo yum clean all
sudo yum repolist enabled
References: