Cleanup

Dockerfile

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+FROM ubuntu:14.04
+
+ENV DEBIAN_FRONTEND noninteractive
+RUN locale-gen en_GB en_GB.UTF-8 && dpkg-reconfigure locales
+
+RUN apt-get update
+
+RUN apt-get -y -q autoclean
+RUN apt-get -y -q autoremove
+RUN apt-get clean
+
+# Prerequisites
+# install self-signed ssl certs
+RUN apt-get install -y --force-yes ssl-cert
+
+# Install postfix as MTA
+RUN apt-get install -y --force-yes postfix
+
+# Install dovecot as IMAP server
+RUN apt-get install -y --force-yes dovecot-imapd
+
+# Install OpenDKIM domain signing server
+RUN apt-get install -y --force-yes opendkim
+
+# postfix configuration
+ADD ./config/postfix.main.cf /etc/postfix/main.cf
+ADD ./condig/postfix.master.cf.append /etc/postfix/master-additional.cf
+RUN cat /etc/postfix/master-additional.cf >> /etc/postfix/master.cf
+
+# configure settings script
+VOLUME ["/mail_config"]
+COPY process_settings /process_settings
+RUN chmod 755 /process_settings
+
+# add user vmail who own all mail folders
+VOLUME ["/vmail"]
+RUN groupadd -g 5000 vmail
+RUN useradd -g vmail -u 5000 vmail -d /vmail -m
+
+# dovecot configuration
+ADD ./config/dovecot.mail /etc/dovecot/conf.d/10-mail.conf
+ADD ./config/dovecot.ssl /etc/dovecot/conf.d/10-ssl.conf
+ADD ./config/dovecot.auth /etc/dovecot/conf.d/10-auth.conf
+ADD ./config/dovecot.master /etc/dovecot/conf.d/10-master.conf
+ADD ./config/dovecot.lda /etc/dovecot/conf.d/15-lda.conf
+ADD ./config/dovecot.imap /etc/dovecot/conf.d/20-imap.conf
+# add verbose logging
+#ADD ./config/dovecot.logging /etc/dovecot/conf.d/10-logging.conf
+
+# smtp port for incoming mail
+EXPOSE 25 
+# imap port
+EXPOSE 143
+# smtp port for outgoing
+EXPOSE 587
+
+# todo: enable port 587 for outgoing mail, separate ports 25 and 587
+# http://www.synology-wiki.de/index.php/Zusaetzliche_Ports_fuer_Postfix
+
+# start necessary services for operation (dovecot -F starts dovecot in the foreground to prevent container exit)
+ENTRYPOINT /process_settings; service rsyslog start; service opendkim start; service postfix start; dovecot -F
+