Hi,
docker run -d -e MYSQL_ROOT_PASSWORD=db_pass123 --name mysql-db mysql
in this command you can see we use “-e” why we used this, and how can we find the available all options list. kindly proved the link for better understanding the options used in docker commands.
Regards,
Zia
This is used to define environment variables to be made use by the mysql container.
Please see the reference : Docker
https://dev.mysql.com/doc/refman/5.7/en/environment-variables.html
In this example we are setting the MYSQL root password which is expected when the DB starts up.
See the above link for all environment option.
These are specific to the containers and not specific to Docker in general. Hope this helps.
Regards,
Vijin