You'll need to disable imklog or rsyslogd won't start:
module(load="imklog") # provides kernel logging support
This is essential unless you give full privileges to your container.
module(load="imuxsock") # provides support for local system logging
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
$FileOwner root
$FileGroup adm
$FileCreateMode 0640
$DirCreateMode 0755
$Umask 0022
$WorkDirectory /var/spool/rsyslog
$IncludeConfig /etc/rsyslog.d/*.conf
auth,authpriv.* /var/log/auth.log
*.*;auth,authpriv.none -/var/log/syslog
daemon.* -/var/log/daemon.log
kern.* -/var/log/kern.log
lpr.* -/var/log/lpr.log
mail.* -/var/log/mail.log
user.* -/var/log/user.log
mail.info -/var/log/mail.info
mail.warn -/var/log/mail.warn
mail.err /var/log/mail.err
*.=debug;\
auth,authpriv.none;\
mail.none -/var/log/debug
*.=info;*.=notice;*.=warn;\
auth,authpriv.none;\
cron,daemon.none;\
mail.none -/var/log/messages
*.emerg :omusrmsg:*
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