yum配置本地iso镜像

[root@node19 ~]# mount -o loop centos-7.6.iso /public/software/cdrom
[root@node19 ~]# vim /etc/yum.repos.d/cdiso.repo
[cd1]
name=cd1
baseurl=file:///public/software/cdrom
enabled=1
gpgcheck=0

[root@node19 ~]# yum install vim