mariadb: network naming from docker-library#1860

Author: grooverdan

mariadb/content.md

@@ -20,7 +20,7 @@ or:
 
 ```console
 $ docker network create some-network # Create the network
-$ docker run --net some-network --name some-%%REPO%% -e MYSQL_ROOT_PASSWORD=my-secret-pw -d %%IMAGE%%:tag
+$ docker run --net some-network --name some-%%REPO%% -e MARIADB_ROOT_PASSWORD=my-secret-pw -d %%IMAGE%%:tag
 ```
 
 ... where `some-network` is newly created network (other than `bridge` as the default network), `some-%%REPO%%` is the name you want to assign to your container, `my-secret-pw` is the password to be set for the MariaDB root user and `tag` is the tag specifying the MariaDB version you want. See the list above for relevant tags.