How to install lxc on synology?

I am a Linux novice, I want to install Lxc on sysnology, because synology does not support apt, I can’t use apt to install Lxc, how can I install lxc on synology?
I downloaded a lxc-5.0.3.tar.gz compressed file on the page Linux Containers - LXC - 下载. Because my native language is not English, I used the Chrome browser to translate the page, so I am not sure if what I downloaded is the offline installation package of LXC. If this is the offline installation package of LXC, how can I install it offline? I did not find the relevant manual.