initial framework

Dockerfile

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+FROM ubuntu:latest
+
+MAINTAINER Ding Corporation
+
+# install packages
+RUN apt-get update \
+    && apt-get install -y fetchmail maildrop mpack \
+    && apt-get clean && rm -fr /var/lib/apt/lists/*
+
+VOLUME /var/mail
+VOLUME /config
+
+RUN maildirmake /var/mail/working \
+    && echo "to /var/mail/working" > /root/.mailfilter
+TOUCH /var/mail/save-attachments.log
+
+ADD save-attachments.crontab /etc/cron.d/save-attachments
+ADD save-attachments.sh /opt/save-attachments.sh
+RUN chmod 0644 /etc/cron.d/save-attachments
+
+ADD docker-entrypoint.sh /opt/docker-entrypoint.sh
+ENTRYPOINT ["/opt/docker-entrypoint.sh"]
+CMD cron && tail -f /var/mail/save-attachments.log

save-attachments.crontab

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+*/5 * * * * mail /opt/save-attachments.sh >> /var/mail/save-attachments.log 2>&1
+

save-attachments.sh

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+#!/bin/bash
+LOG=/dev/stderr
+echo "== $(date -Is) ==" >> $LOG
+
+fetchmail 
+