Initial commit.

.gitignore

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+private_README

crontab

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+# /etc/crontab: system-wide crontab
+# Unlike any other crontab you don't have to run the `crontab'
+# command to install the new version when you edit this file
+# and files in /etc/cron.d. These files also have username fields,
+# that none of the other crontabs do.
+
+SHELL=/bin/sh
+PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
+
+# m | h | day of month | month | day of week | user | command
+30    0              *       *             *   root   docker -H tcp://127.0.0.1:2375 exec dockermailstack_dovecot_1 /root/dovecot_expire.sh > /proc/1/fd/2 2>&1

docker-compose.yml

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+version: "2.1"
+ 
+services:
+
+  dovecot:
+    image: dovecot
+    restart: always
+    ports:
+      - 993:993/tcp
+      - 4190:4190/tcp
+    networks:
+      - mailnet
+    volumes:
+      - mail_data:/home/yohan
+      - ./dovecot_expire.sh:/root/dovecot_expire.sh
+ 
+  fetchmail:
+    image: fetchmail
+    restart: always
+    networks:
+      - mailnet
+ 
+  feed2imap:
+    image: feed2imap
+    restart: always
+    networks:
+      - mailnet
+
+  cron-purge-dovecot:
+    image: cron
+    restart: always
+    network_mode: "host"
+    volumes:
+      - ./crontab:/etc/crontab
+
+networks:
+
+  mailnet:
+    external: true
+
+volumes:
+
+  mail_data:
+    external: true

dovecot_expire.sh

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+#!/bin/bash
+doveadm expunge -u admin mailbox Feeds.phoronix savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.hardwarefr savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.pcinpact_articles savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.planet_debian savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.planet-fr_debian_net savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.planetkde savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.le_monde savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.hardwarefr_articles savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.lesnumeriques savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.planet_libre savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.fedora-fr savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.pcinpact savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.dotkdeorg savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.reddit_science savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.reddit_technology savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.ars_technica savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.cinema_france savedbefore 60d
+doveadm expunge -u admin mailbox Feeds.cinema_usa savedbefore 60d
+echo `date +"%F %T"` "Old feeds purged"
+exit 0
+