sudo nano /etc/apt/apt.conf.d/proxy.conf

Acquire::http::Proxy "http://192.168.0.12:12334";
Ctrl+O, Enter, Ctrl+X for exit

wget http://download.onlyoffice.com/docspace/docspace-install.sh
bash docspace-install.sh package
https://mirror.slitaz.org/packages/cooking/linux-api-headers-3.16.55.tazpkg
https://mirror.slitaz.org/packages/cooking/mpfr-4.1.0.tazpkg