Added custom backup frequency option which fixes #3

Author: UntouchedWagons

Dockerfile

@@ -3,9 +3,14 @@ LABEL org.opencontainers.image.authors="untouchedwagons@fastmail.com"
 
 COPY scripts/backup.sh /root/backup.sh
 COPY scripts/run.sh /root/run.sh
-COPY cron/backup-cronjob /tmp/backup-cronjob
 
 RUN chmod 0744 /root/backup.sh /root/run.sh
 RUN apt-get update && apt-get -y install cron nano && touch /var/log/cron.log
 
+ENV BACKUP_DIRECTORY="/backups"
+ENV BACKUP_APPEND_DIRECTORY=""
+ENV BACKUP_BASE_NAME=""
+ENV BACKUP_RETENTION="24"
+ENV BACKUP_FREQUENCY="*/15 * * * *"
+
 CMD ["/root/run.sh"]

cron/backup-cronjob

@@ -1,11 +1,12 @@
 #! /bin/bash
 touch /var/log/cron.log
-env | egrep '^BACKUP' | cat - /tmp/backup-cronjob > /etc/cron.d/backup-cronjob
+env | egrep '^BACKUP' | cat > /etc/cron.d/backup-cronjob
+echo "$BACKUP_FREQUENCY /root/backup.sh" >> /etc/cron.d/backup-cronjob
 crontab /etc/cron.d/backup-cronjob
 
 _term() { 
-  echo "Caught SIGTERM signal!" 
-  kill -TERM "$child" 2>/dev/null
+    echo "Caught SIGTERM signal!" 
+    kill -TERM "$child" 2>/dev/null
 }
 
 trap _term SIGTERM