Traefik logs are never rotated

[galenguyer]

Traefik logs are never rotated, leading to a single huge log file. While space is much less of a constraint than it used to be, this should probably be addressed.

A plain logrotate file on the host could work, but it would have to be copied to /etc/logrotate.d/.

A better solution might be having a container dedicated to rotating logs that mounts the traefik volume and a logrotate configuration. The downside here is it makes sending a USR1 signal to traefik much harder.