# 1. Add the repository key
wget -O - -q https://apt.tasemnice.eu/key.gpg | sudo apt-key add -v -

# 2. Add the lorris repository
echo deb http://apt.tasemnice.eu/ubuntu stable main | sudo tee /etc/apt/sources.list.d/lorris.list

# 3. Update packages and install
sudo apt-get update && sudo apt-get install lorris

Index of /ubuntu/pool/dists/

../
bionic/                                            11-Jan-2023 08:39                   -
focal/                                             11-Jan-2023 08:17                   -
jammy/                                             11-Jan-2023 08:27                   -
stable/                                            11-Jan-2023 08:27                   -
xenial/                                            11-Jan-2023 08:32                   -