Containerum RPM repository isn't working

[hoangddt]

In this step Add Containerum repository to yum link.

cat <<EOF > /etc/yum.repos.d/exon.repo
[exonlab-kubernetes1.11-testing]
name=Exon lab kubernetes repo for CentOS
baseurl=http://repo.containerum.io/centos/7/kubernetes-1_11-pkg/x86_64/
skip_if_unavailable=False
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://repo.containerum.io/RPM-GPG-KEY-ExonLab
enabled=1
enabled_metadata=1
EOF

The url in line 4 isn't working (Timeout error) lead to I cant update the repo and cannot process to next step of the installation