MariaDB

docker exec -it mariadb bash

create database DATABASE_NAME;

grant all privileges on DATABASE_NAME.* TO 'USER_NAME' identified by 'PASSWORD';

flush privileges;

CREATE OR REPLACE TABLE table_name (a int);

docker exec mariadb mariadb-dump -uroot -ppassword --all-databases > /mnt/backup/database/mariadb-$(date +%Y-%m-%d).sql