[Unit]
Description=Anki

[Service]
ExecStart=/opt/anki/anki-<version>-linux-qt6/anki --syncserver
WorkingDirectory=/opt/anki/anki-<version>-linux-qt6
Environment="SYNC_USER1=<username>:<password>"
Environment="SYNC_PORT=<something other than 8080>"
Environment="SYNC_BASE=<directory to store databases>"

[Install]
WantedBy=multi-user.target