How do I install Arch Linux on a 99Stack VPS?

I can't find any Arch Linux images but I heard that it should work. Where can I find Arch Linux images?

We may see Arch Linux images or even custom images you can upload yourself in the future but for now you need to use the method described here: https://wiki.archlinux.org/index.php/Install_from_existing_Linux

That replaces an existing Linux installation with Arch Linux.