debian: add systemd service unit for authentic2-multitenant (#16807)

debian/authentic2-multitenant.service

@@ -0,0 +1,27 @@
+[Unit]
+Description=Authentic 2 (multitenants)
+After=network.target postgresql.service
+Wants=postgresql.service
+
+[Service]
+Environment=AUTHENTIC2_SETTINGS_FILE=/usr/lib/%p/debian_config.py
+Environment=LANG=C.UTF-8
+User=authentic-multitenant
+Group=authentic-multitenant
+ExecStartPre=/usr/bin/authentic2-multitenant-manage migrate_schemas --noinput
+ExecStartPre=/usr/bin/authentic2-multitenant-manage collectstatic --noinput
+ExecStart=/usr/bin/gunicorn \
+          --bind unix:/run/%p/%p.sock \
+          --worker-class=sync \
+          --workers 5 \
+          --timeout=30 \
+          --name %p \
+          authentic2.wsgi:application
+ExecReload=/bin/kill -HUP $MAINPID
+TimeoutStartSec=0
+PrivateTmp=true
+Restart=on-failure
+RuntimeDirectory=authentic2-multitenant
+
+[Install]
+WantedBy=multi-user.target