Run daily curator cleanup jobs in the container

Dockerfile

@@ -2,6 +2,7 @@ FROM registry.git.autistici.org/ai3/docker-chaperone-base:master
 
 COPY conf /tmp/conf
 COPY build.sh /tmp/build.sh
+COPY curator-cron /usr/bin/curator-cron
 
 RUN /tmp/build.sh && rm /tmp/build.sh
 

conf/chaperone.d/curator-cron.conf

+curator-cron.service: {
+    type: cron,
+    interval: "19 2 * * *",
+    command: "/usr/bin/curator-cron",
+}

curator-cron

+#!/bin/sh
+
+test -x /usr/bin/curator || exit 0
+
+# If you don't set a locale, curator doesn't run.
+export LC_ALL=en_US.UTF-8
+
+find /etc/elasticsearch/actions -type f -name 'maint_*.yml' \
+    | xargs -n 1 curator --config=/etc/elasticsearch/curator.yml
+    >/dev/null 2>&1
+
+exit 0