Icloud for linux is a python module that lets you sync your icloud files locally using icloud webservices. It uses pyicloud with some minor modifications to interact with icloud web services.
This is an unofficial tool, and not affiliated with Apple. USE AT YOUR OWN RISK!
Icloud for linux uses the keyring to store your apple password. The first time you run the program, you will be prompted to enter your icloud password. Future runs will fetch the password from the keyring.
Run in terminal
./icloud --username=your_email@icloud.com
Copy icloud_for_linux.service to ~/.config/systemd/user/ and modify ExecStart to point to the location you installed the icloud for linux binary.
systemctl --user enable icloud_for_linux
systemctl --user start icloud_for_linux