Dockerfile

@@ -34,6 +34,7 @@ RUN install -dm 2750 -o root -g root /var/lib/monit
 COPY --from=build /etc/monitrc /etc/monitrc
 COPY ./nsupdate.sh /usr/local/bin/nsupdate
 COPY ./whatsmyip6.sh /usr/local/bin/whatsmyip6
+COPY ./syslogize.sh /usr/local/bin/syslogize
 COPY ./zeroconf.sh /usr/local/bin/zeroconf
 COPY ./zeroconf.conf /etc/zeroconf.conf
 

syslogize.sh

@@ -0,0 +1,33 @@
+#!/bin/sh
+# A wrapper for programs that can't write to syslog.  Output and error
+# are sent to syslog.
+#
+# Use LOGGER environment variable to pass options to `logger`.  They'll
+# probably be system-dependent, so handle with care.
+#
+# Usage:
+#
+# LOGGER="-t program" syslogize program -o -p --tions argu ments
+#
+# daemonize /usr/local/bin/syslogize program
+
+if test $# -eq 0 ; then
+  grep "^#" $0 | grep -v /bin/sh | sed -re "s/^#\s*//" >&2
+
+  exit 1
+fi
+
+LOGGER="${LOGGER:--t $1}"
+
+propagate_signal () {
+  logger ${LOGGER} "Received $1 signal"
+  jobs -p | xargs kill -$1 
+}
+
+for signal in HUP INT QUIT USR1 USR2 TERM; do
+  trap "propagate_signal ${signal}" ${signal}
+done
+
+$@ 2>&1 | logger ${LOGGER} &
+
+wait $!