For anyone with GitHub account GitPod provides ready-to-code environments in browser window. I know that Zabbix SIA rarely accepts patches from external developers, so "ready-to-code" may not be as exciting for Zabbix as for other open source projects. But you can see it as "ready-to-reproduce-a-bug" environments that can easily be shared. And it has a potential to become a way for new users to try out Zabbix in their browser without installing a thing (not even Docker required for Zabbix containers or VirtualBox for Zabbix appliance) but still having full access to the setup (unlike demo on zabbix.org).

The best way to integrate GitPod into project is to have .gitpod.yml file (I would be happy to provide one) in the repository. But if that's not an option, GitPod configuration can be stored outside. In the latter case feel free to close the ticket, because it does not necessarily need any action from Zabbix team.

P.S. GitHub has recently announced Codespaces providing similar features, but at the moment they are in beta stage.