PPA

Finally I have setup my own launchpad PPA (https://launchpad.net/~gerardpuig/+archive/ubuntu/ppa), installing ubuntu-cleaner became much more easier. Also updates are handled automatically with apt.

If you want to add my ppa just type in your terminal:

sudo add-apt-repository ppa:gerardpuig/ppa

Then you can fetch updates and install the package:

sudo apt update && sudo apt install ubuntu-cleaner

Enjoy!