urBackup - right way for File backup docker apps and Ubuntu configs for linux client

Using File Backup (no snapshots in datto for arm64) for linux clients on ubuntu in Oracle cloud (arm64)
catalogs for Backup - “/etc;/home;/opt;/usr/local/var/urbackup/”

is it OK for saving (opt/appdata/* <— Docker Programs - persistent storage) like this or need to use script to stop all docker befor and start after ?

for /etc some log shows FAILED

What is the right way to storre linux client by file backup ?