fix: only use the RETURN signal for the suppress file removal
fix: only use the RETURN signal for the suppress file removal

Closes #3473

claytonbrown/dokku,claytonbrown/dokku,jimjag/dokku,dokku/dokku,claytonbrown/dokku,jimjag/dokku,claytonbrown/dokku,dokku/dokku,progrium/dokku,progrium/dokku,progrium/dokku,progrium/dokku,dokku/dokku,dokku/dokku,claytonbrown/dokku,claytonbrown/dokku,progrium/dokku,jimjag/dokku,dokku/dokku,dokku/dokku,progrium/dokku,dokku/dokku,jimjag/dokku,progrium/dokku,jimjag/dokku,dokku/dokku,claytonbrown/dokku,claytonbrown/dokku,jimjag/dokku,jimjag/dokku,jimjag/dokku,progrium/dokku