added clean-heldmsg cron

Dockerfile

@@ -4,6 +4,7 @@ COPY conf /tmp/conf
 COPY build.sh /tmp/build.sh
 COPY start.sh /start.sh
 COPY apply-forced-params /usr/local/bin/apply-forced-params
+COPY clean-heldmsg usr/local/bin/clean-heldmsg
 COPY sendmail.py /usr/sbin/sendmail
 RUN /tmp/build.sh && rm -fr /tmp/build.sh /tmp/conf
 

build.sh

@@ -99,6 +99,8 @@ mkdir /var/empty
 
 chmod 755 /usr/local/bin/apply-forced-params
 
+chmod 755 /usr/local/bin/clean-heldmsg
+
 chmod 755 /usr/sbin/sendmail
 
 # Install python-mailman-api.

clean-heldmsg

+#!/bin/sh
+
+test -d /data/data || exit 0
+test -e /var/lib/mailman/bin/discard || exit 0
+find /data/data/ -name heldmsg\* -mtime +20 -print | xargs -n 1 /var/lib/mailman/bin/discard >/dev/null 2>&1
+exit 0

conf/chaperone.d/clean-heldmsg-cron.conf

+clean-heldmsg-cron.service: {
+    type: cron,
+    interval: "50 4 * * *",
+    command: "/usr/local/bin/clean-heldmsg",
+}