feat(fetchmail): added fetchmail

cron job to run fetchmail script to get fetchmail config from roundcube
mysql database.

MR !1

dockerfile

@@ -43,6 +43,21 @@ RUN apt update && DEBIAN_FRONTEND=noninteractive apt -y --no-install-recommends
       libmailtools-perl=2.21-1 \
       fam=2.7.0-17.3 \
       libnet-dns-perl=1.29-1 \
+        # Fetchmail
+      fetchmail=6.4.16-4+deb11u1 \
+        # Perl Modules for fetchmail.pl
+        # DBI
+      libdbix-easy-perl \
+        # LockFile::Simple
+      liblockfile-simple-perl \
+        # DBD::mysql
+      libclass-dbi-mysql-perl \
+        # Sys::Syslog
+      liblogger-syslog-perl \
+        # LockFile::Simple
+      libio-lockedfile-perl
+
+
 # Cleanup, remove cron jobs not required
 RUN rm -f /etc/cron.d/e2scrub_all \
     && rm -f /etc/cron.daily/apt-compat \
@@ -88,6 +103,13 @@ RUN chmod +x /docker-entrypoint.sh \
       # Spammassassin related Commands
     && mkdir -p /var/spool/spamassassin \
     && chmod 777 /var/spool/spamassassin \
+      # Ensure spamassassin related scripts are executable
+    && chmod +x /bin/spam-learn.sh \
+       # fetchmail.pl setup
+    && curl -o /bin/fetchmail.pl https://raw.githubusercontent.com/postfixadmin/postfixadmin/8f20c96278a694a7e0bb570f1d56c208105e5a14/ADDITIONS/fetchmail.pl \
+    && chmod +x /bin/fetchmail.pl \
+    && mkdir -p /var/run/fetchmail \
+    && mkdir -p /var/lock/fetchmail
         
 
 # Setup data volumes

include/docker-entrypoint.sh

@@ -31,6 +31,8 @@ do
 done
 
 
+mkdir -p /var/lock/fetchmail
+
 if [ "$1" == "setup" ]; then
 
 

include/etc/cron.d/fetchmail

@@ -0,0 +1,7 @@
+#
+#  SpamAssassin Bayes learning from mailboxes 
+#
+# m h dom mon dow user  command
+#1,31 *	* * *	root	if [ "0$USE_FETCHMAIL_PL" != "0" ]; then /bin/fetchmail.pl 2>&1; fi
+1,31 *	* * *	root	if [ "0$USE_FETCHMAIL_PL" != "0" ]; then echo /bin/fetchmail.pl 2>&1; fi
+

include/etc/mail/postfixadmin/fetchmail.conf

@@ -0,0 +1,24 @@
+# database settings
+
+# database backend - uncomment one of these
+our $db_type = 'mysql';
+#my $db_type = 'mysql';
+
+# host name
+our $db_host="mysql";
+# database name
+our $db_name="roundcube";
+# database username
+our $db_username="roundcube";
+# database password
+our $db_password="roundcube";
+
+# Where to create a lockfile; please ensure path exists.
+our $run_dir="/var/lock/fetchmail";
+
+# in case you want to use dovecot deliver to put the mail directly into the users mailbox,
+# set "mda" in the fetchmail table to the keyword "dovecot".
+
+# Where the delivery binary is located
+$dovecot_deliver = "/usr/lib/dovecot/dovecot-lda";
+