tente
docker run --name MariaDB -v MariaDBData:/var/lib/mysql:z -e MYSQL_ROOT_PASSWORD=topsecretpassword --network bridged -p 3306:3306 -d mariadb:latest
OR
docker run --name MariaDB -v MariaDBData:/var/lib/mysql:Z -e MYSQL_ROOT_PASSWORD=topsecretpassword --network bridged -p 3306:3306 -d mariadb:latest
OR
Desative o Selinux antes de executar o comando