[Archivesspace_Users_Group] logrotate and "binary" logs

[Dyson-Smith, Bridger]

Hi all -

I recently setup logrotate according to the helpful blurb in the tech-
docs[1], which has been great for our disk usage but seems to have
introduced a change in the log file's `file` type. 

Before logrotate, we had 


$ file archivesspace.out 
aspace-log.out: ASCII text, with very long lines

and now with logrotate in play, we have

$ file as-log.out
as-log.out: data

which causes all sorts of trouble if I want to do anything other than
tail a log :). 

I guess I was hoping someone may a suggestion or two about how to
approach this, either from the logrotate side or perhaps using another
utility to either modify the `file` metadata or parse the binary format
to something greppable?

Thanks for any advice you can share. My searching hasn't panned out.
Best,
Bridger

[1]
https://archivesspace.github.io/tech-docs/administration/logrotate.html

[2] my config:
archivesspace/logs/archivesspace.out {
        daily
        rotate 7
        compress
        notifempty
        missingok
        copytruncate
}