Better logging, better config

opendkim/Dockerfile

@@ -9,6 +9,8 @@ RUN echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
+COPY ./config/rsyslog.conf /etc/rsyslog.conf
+
 # Nice place for your settings
 VOLUME ["/mail_settings"]
 
@@ -19,4 +21,4 @@ RUN chmod 755 /boot
 ENV OPEN_DKIM=true
 
 EXPOSE 8891
-ENTRYPOINT /boot; opendkim -f -p inet:8891@0.0.0.0
+ENTRYPOINT /boot; opendkim -p inet:8891@0.0.0.0; rsyslogd -n

opendkim/boot

@@ -5,8 +5,3 @@ cp /mail_settings/opendkim.conf /etc/opendkim.conf
 cp /mail_settings/mail.private /etc/dkim.key
 chown root:root /etc/dkim.key
 chmod 600 /etc/dkim.key
-
-ln -sf /dev/stdout /var/log/mail.log
-ln -sf /dev/stdout /var/log/mail.info
-ln -sf /dev/stdout /var/log/mail.warn
-ln -sf /dev/stderr /var/log/mail.err

opendkim/config/rsyslog.conf

@@ -0,0 +1,28 @@
+#  /etc/rsyslog.conf    Configuration file for rsyslog.
+#
+#                       For more information see
+#                       /usr/share/doc/rsyslog-doc/html/rsyslog_conf.html
+#
+#  Default logging rules can be found in /etc/rsyslog.d/50-default.conf
+
+
+#################
+#### MODULES ####
+#################
+
+$ModLoad imuxsock # provides support for local system logging
+
+###########################
+#### GLOBAL DIRECTIVES ####
+###########################
+
+# Filter duplicated messages
+$RepeatedMsgReduction on
+#
+# Where to place spool and state files
+#
+$WorkDirectory /var/spool/rsyslog
+
+# Write everything to stdout
+$template fmt,"%timestamp:::date-rfc3164%\n"
+*.* /dev/stdout