Warning from syslog-ng init on startup

[Brett Green]

Getting this new warning on passenger-docker from syslog-ng about the config file being too old:

WARNING: Configuration file format is too old, syslog-ng is running in compatibility mode. Please update it to use the syslog-ng 3.25 format at your time of convenience. To upgrade the configuration, please review the warnings about incompatible changes printed by syslog-ng, and once completed change the @version header at the top of the configuration file; config-version='3.13'

This originates from the baseimage-docker which, does, indeed have a version 3.31 format from the conf file. 

https://github.com/phusion/baseimage-docker/blob/master/image/services/syslog-ng/syslog-ng.conf

Should this be logged as a bug/feature request to get this updated for the next version of the image?