Issue with the backup instructions

### 💭 Description I couldn't make a proper backup using instructions from this page: https://appwrite.io/docs/advanced/self-hosting/production/backups. Volumes archives ended up empty. System: TrueNAS Scale 24.10.2.4 (Debian) Environment: Docker via Dockge app. I'm pretty new to appwrite, so maybe I'm missing something here, but I hope it may help someone. The only way I could produce a proper backup was to use this script: ```sh BACKUP_DIR="path/to/backup" volumes=("uploads" "functions" "builds" "sites" "certificates" "config" "cache") for volume in "${volumes[@]}"; do docker run --rm --volumes-from appwrite -v $PWD/$BACKUP_DIR:/backup ubuntu bash -c "cd /storage/$volume && tar cvf /backup/$volume.tar ." done ``` This produces an error for `mariadb` and `redis` volumes, so I'm still using old backup instructions for those even if they produce empty archives because I'm not sure what those volumes should even include. Please update instructions with a working version. ### 👀 Have you spent some time to check if this issue has been raised before? - [x] I checked and didn't find similar issue ### 🏢 Have you read the Code of Conduct? - [x] I have read the [Code of Conduct](https://github.com/appwrite/.github/blob/main/CODE_OF_CONDUCT.md)