An easy way to test your backup is creating a new instance :
docker run -d --rm --name mariadb-test --env MARIADB_ROOT_PASSWORD=root-pw \
--env MARIADB_USER=user1 --env MARIADB_PASSWORD=passwd1 -p 3306:3306 mariadb
Restore your backup:
docker e...
If you have a docker environment with some Mariadb instances, you want to backup these db regularly
The Mariadb documentation provide an easy line : mariadb-dump db_name > backup-file.sql
If you don't want to specify a dbname just add --all-data...