Feature Request: Warn the user if no supervisor configuration is present in the selected environment

[Yudi Kubota]

I just spent an awful lot of time trying to debug why horizon was not running just to realize I was on staging environment and there was no staging supervisors...

I think it would be nice to warn the user if no supervisors are configured.

[Dries Vints]

But doesn't the dashboard show no supervisors in the list in that scenario?

[Yudi Kubota]

But doesn't the dashboard show no supervisors in the list in that scenario?

Yeah, but I didn't check the dashboard, only the CLI as it was running inside a docker container for staging environment.

This is a feature request for the CLI. Something like:

php artisan horizon

INFO  Horizon started successfully.  

WARN no supervisor configuration for environment "staging"

I ask you to consider reopening this issue. Maybe other people stumble upon this exact mistake.

[Dries Vints]

Ah right, I understand. Yeah I can see that being useful, feel free to attempt a PR 👍

[Yudi Kubota]

Ah right, I understand. Yeah I can see that being useful, feel free to attempt a PR 👍

Just made my first PR to this repo.