Le site officiel : https://gotify.net/ .
Les sources du projet : https://github.com/gotify .

Voici les étapes de l’installation :

$ cd /opt/
$ sudo wget https://github.com/gotify/server/releases/download/v2.0.16/gotify-linux-amd64.zip
$ sudo unzip gotify-linux-amd64.zip
Archive:  gotify-linux-amd64.zip
  inflating: gotify-linux-amd64      
  inflating: LICENSE                 
   creating: licenses/
$ sudo chmod +x gotify-linux-amd64
$ sudo mkdir /etc/gotify
$ sudo vi /etc/gotify/config.yml
server:
  listenaddr: "" # the address to bind on, leave empty to bind on all addresses
  port: 7070 # the port for the http server
$ sudo ./gotify-linux-amd64

Ensuite on se connecte :

http://127.0.0.1:7070/#/login
– Login : admin
– Password : admin