Update 'Setup-Repo.sh'

Setup-Repo.sh

@@ -53,7 +53,7 @@ universe () {
 
 epel () {
     if [ "$osrel" = "cent8" ] ; then
-        $PKGI https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
+        dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
         rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-8
     else
         echo "$repo repository not available for this Distro"