borg

Dockerfile

@@ -1,2 +1,14 @@
 FROM sutty/monit:latest
 MAINTAINER "f <f@sutty.nl>"
+
+ENV BORG_HOST_ID borg
+ENV BORG_PASSPHRASE ""
+ENV KEEP 30
+
+COPY ./monit.conf /etc/monit.d/borg.conf
+COPY ./backup.sh /usr/local/bin/backup
+
+RUN apk add --no-cache borgbackup
+
+VOLUME /srv/data
+VOLUME /srv/backups

backup.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+set -e
+
+# Password can't be empty
+test -n "${BORG_PASSPHRASE}"
+
+date="$(date +%F)"
+orig=/srv/data
+dest=/srv/backups
+
+test -f "${dest}/config" || borg init --encryption=repokey "${dest}"
+
+borg create -v --stats "${dest}::${date}" "${orig}"
+borg prune -v --stats --keep-daily ${KEEP} "${dest}"
+
+exit $?

monit.conf

@@ -0,0 +1,4 @@
+check program backup
+  with path "/usr/local/bin/backup"
+  if status != 0 then alert
+  every "53 3 * * *"