why config set ` user: "472" ` but not `user: "root"` in example/monitor/grafana/docker-compose.yml

[luojiyin1987]

I get error

grafana  | t=2022-10-19T15:19:17+0000 lvl=info msg="Connecting to DB" logger=sqlstore dbtype=sqlite3
grafana  | t=2022-10-19T15:19:17+0000 lvl=info msg="Creating SQLite database file" logger=sqlstore path=/data/grafana.db
grafana  | Failed to start grafana. error: failed to connect to database: failed to create SQLite database file "/data/grafana.db": open /data/grafana.db: permission denied
grafana  | failed to connect to database: failed to create SQLite database file "/data/grafana.db": open /data/grafana.db: permission denied
grafana exited with code 1

grafana git:(master) ✗ ll
total 12K
drwxr-xr-x 4 root   root   4.0K Oct 19 15:23 data
drwxr-xr-x 2 root   root   4.0K Oct 19 15:21 datasources
-rw-rw-r-- 1 moitor moitor  592 Oct 19 15:21 docker-compose.yml

so I change user: "472" to user: "root" to run docker image .

the docker-compose.yml