# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

pv $BACKUP | docker exec -i $CONTAINER /usr/bin/mysql -u $MARIA_DB_USER --password=$MARIA_DB_PASS $MARIA_DB_NAME