Bug: MariaDB setup problems

[appins]

Expected Behavior

MariaDB setup should not fail to setup a database when a user does not enter in a password.

Actual Behavior

Setup fails

Steps To Reproduce The Problem

1. Start MariaDB install script (https://github.com/OpenEugene/openboard/blob/main/back/tools/install-mariadb)
2. Leave the password field for the user blank.

Additional Notes

MariaDB setup should either have a note letting users know that they must have a password, ask for a password until it is not empty, and/or not fail on an empty password.