Hello everyone,

While testing the official Ubuntu-based container for Zabbix 7.0.13, I noticed that the environment variable ZBX_GUI_WARNING_MSG appears to be broken or non-functional.

Despite setting the variable correctly in the nginx-postgresql-frontend container, the frontend still displays the default warning message, instead of the custom one defined via ZBX_GUI_WARNING_MSG.

This behavior suggests that the variable is either being ignored or overridden during container startup. I’ve verified the configuration and container logs, and everything else seems to be working as expected.

Has anyone else experienced this issue?
Is this a known bug or a regression in 7.0.13?

Thanks in advance for any insights or workarounds!