自编译 RedHat/CentOS/Rocky 7/8 软件源
打包一些自己用到的，但是官方没有提供的RPM包。
# add repository configuration firstly
sudo yum install http://dl.simaek.com/simaek/7/main/x86_64/Packages/simaek-release-7-9.el7.noarch.rpm
# then you can install extra packages from this repo
sudo yum install frp n2n ...