Steps to reproduce:

1. Use zabbix-server-mysql Docker appliance

Result:
Oversized MySQL directory.

-rw-------. 1  101  101 308M Mar 1 10:30 core.203
-rw-------. 1  101  101 308M Mar 1 10:35 core.204
-rw-------. 1  101  101 297M Mar 2 13:43 core.327
-rw-------. 1  101  101 300M Mar 3 10:35 core.328
-rw-------. 1  101  101 297M Mar 2 13:44 core.368
-rw-------. 1  101  101 300M Mar 3 10:36 core.371

Expected:
Optimised MySQL settings should be used (Core Files). Even if MySQL should not be used within stateless approach, it's better to reduce possible space allocation for dump/core files not used on every day basis.

Regards,
Edgar