fixed logging in spampd and postfix

postfix/Dockerfile

@@ -4,15 +4,24 @@ FROM ubuntu:20.04
 ENV TZ Europe/Berlin 
 RUN <<EOF
 apt-get update
-apt-get install -y postfix bind9-dnsutils
+apt-get install -y postfix bind9-dnsutils 
+apt-get install -y rsyslog 
 # cleanup
 apt-get autoclean
 rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* ~/.cache ~/.npm
 EOF
 COPY etc/postfix/ /etc/postfix/
 COPY etc/ssl/ /etc/ssl/
+# https://github.com/moby/moby/issues/31243#issuecomment-406879017
+RUN <<EOF
+sed -i '/imklog/s/^/#/' /etc/rsyslog.conf
+sed -i 's|-/var/log/syslog|/dev/stdout|' /etc/rsyslog.d/50-default.conf
+usermod -G tty syslog
+# chown -R postfix /var/spool/postfix
+EOF
 COPY --chmod=0775 entrypoint.sh /entrypoint.sh
 EXPOSE 25
+EXPOSE 10026
 VOLUME /var/spool/postfix
 ENTRYPOINT ["/entrypoint.sh"]
 CMD ["postfix", "start-fg"]