MySQL 8 incompatibilities

[mktcode]

Either the hub should run with a MySQL 8 database or a note should be placed in the readme or this needs to be a more explicit/enforced dependency.

On a new Linux laptop (Mint 20) installing MySQL will install version 8. Running the hub will fail due to incompatibilities in the mysql package being used.

mysqljs/mysql#1959
mysqljs/mysql#2233

This workaround fixes the issue though: https://stackoverflow.com/a/50377944/2560696

[stormsson]

@mktcode have you considered switching to MariaDB ? I actually had it working immediatly when changing it in the docker-compose

[mktcode]

MariaDB is not identical to MySQL but the important point is just... no matter what the dependency is, it should be documented somewhere. Working on the Hub's readme/docs is something I'm looking forward to do but I didn't find much time to spend on it yet.

[zzuziak]

@ChaituVR what's your take on this?