Method `xdebug_info()` will still show `xdebug.mode=develop`, but `Step Debugger` will be `enabled`.
> You can enhance it by appending `idekey`, but IDE setup then may require you to specify "IDE Key (session id)", the host (localhost:80) and set "path mapping" so that your local project-folder is mapped to "/app". All is done via IDE configuration.
>
>
> `XDEBUG_CONFIG="client_host=host.docker.internal start_with_request=yes idekey=yii3debug`
>