[Unit]
Description=augenkrebs server
After=network.target
#After=slim.target
# ^replace by the X target of your choice
[Service]
Type=simple
User=augenkrebs
ExecStart=/usr/bin/augenkrebs
Environment=DISPLAY=:0
# Give a reasonable amount of time for the server to start up/shut down
TimeoutSec=300
[Install]
WantedBy=graphical.target