FROM docker.io/debian:buster-slim ARG VCS_VER ARG VCS_REF ARG DEBIAN_FRONTEND=noninteractive LABEL org.opencontainers.image.version=${VCS_VER} LABEL org.opencontainers.image.revision=${VCS_REF} LABEL org.opencontainers.image.title="docker-mailserver" LABEL org.opencontainers.image.vendor="The Docker Mailserver Organization" LABEL org.opencontainers.image.authors="The Docker Mailserver Organization on GitHub" LABEL org.opencontainers.image.licenses="MIT" LABEL org.opencontainers.image.description="A fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.). Only configuration files, no SQL database." LABEL org.opencontainers.image.url="https://github.com/docker-mailserver" LABEL org.opencontainers.image.documentation="https://github.com/docker-mailserver/docker-mailserver/blob/master/README.md" LABEL org.opencontainers.image.source="https://github.com/docker-mailserver/docker-mailserver" ENV ENABLE_POSTGREY=0 ENV FETCHMAIL_POLL=300 ENV ONE_DIR=0 ENV POSTGREY_AUTO_WHITELIST_CLIENTS=5 ENV POSTGREY_DELAY=300 ENV POSTGREY_MAX_AGE=35 ENV POSTGREY_TEXT="Delayed by Postgrey" ENV SASLAUTHD_MECHANISMS=pam ENV SASLAUTHD_MECH_OPTIONS="" ENV VIRUSMAILS_DELETE_DELAY=7 SHELL ["/bin/bash", "-o", "pipefail", "-c"] # ––––––––––––––––––––––––––––––––––––––––––––––– # ––– Install Basic Software –––––––––––––––––––– # ––––––––––––––––––––––––––––––––––––––––––––––– RUN \ apt-get -qq update && \ apt-get -y install apt-utils &>/dev/null && \ apt-get -y dist-upgrade >/dev/null && \ apt-get -y install postfix >/dev/null && \ apt-get -y --no-install-recommends install \ # A - D altermime amavisd-new apt-transport-https arj binutils bzip2 \ ca-certificates cabextract clamav clamav-daemon cpio curl \ dovecot-core dovecot-imapd dovecot-ldap dovecot-lmtpd \ dovecot-managesieved dovecot-pop3d dovecot-sieve dovecot-solr \ dumb-init \ # E - O ed fail2ban fetchmail file gamin gnupg gzip iproute2 iptables \ locales logwatch lhasa libdate-manip-perl liblz4-tool \ libmail-spf-perl libnet-dns-perl libsasl2-modules lrzip lzop \ netcat-openbsd nomarch opendkim opendkim-tools opendmarc \ # P - Z pax pflogsumm postgrey p7zip-full postfix-ldap postfix-pcre \ postfix-policyd-spf-python postsrsd pyzor \ razor rpm2cpio rsyslog sasl2-bin spamassassin supervisor \ unrar-free unzip whois xz-utils >/dev/null && \ # cleanup apt-get -qq autoclean && \ apt-get -qq clean && \ rm -rf /var/lib/apt/lists/* && \ c_rehash 2>/dev/null # ––––––––––––––––––––––––––––––––––––––––––––––– # ––– ClamAV & FeshClam ––––––––––––––––––––––––– # ––––––––––––––––––––––––––––––––––––––––––––––– RUN \ echo '0 */6 * * * clamav /usr/bin/freshclam --quiet' > /etc/cron.d/clamav-freshclam && \ chmod 644 /etc/clamav/freshclam.conf && \ freshclam && \ sed -i 's/Foreground false/Foreground true/g' /etc/clamav/clamd.conf && \ mkdir /var/run/clamav && \ chown -R clamav:root /var/run/clamav && \ rm -rf /var/log/clamav/ # ––––––––––––––––––––––––––––––––––––––––––––––– # ––– Dovecot & MkCert –––––––––––––––––––––––––– # ––––––––––––––––––––––––––––––––––––––––––––––– COPY target/dovecot/auth-passwdfile.inc target/dovecot/??-*.conf /etc/dovecot/conf.d/ COPY target/dovecot/sieve/ /etc/dovecot/sieve/ COPY target/dovecot/dovecot-purge.cron /etc/cron.d/dovecot-purge.disabled RUN chmod 0 /etc/cron.d/dovecot-purge.disabled WORKDIR /usr/share/dovecot # hadolint ignore=SC2016,SC2086,SC2069 RUN \ sed -i -e 's/include_try \/usr\/share\/dovecot\/protocols\.d/include_try \/etc\/dovecot\/protocols\.d/g' /etc/dovecot/dovecot.conf && \ sed -i -e 's/#mail_plugins = \$mail_plugins/mail_plugins = \$mail_plugins sieve/g' /etc/dovecot/conf.d/15-lda.conf && \ sed -i -e 's/^.*lda_mailbox_autocreate.*/lda_mailbox_autocreate = yes/g' /etc/dovecot/conf.d/15-lda.conf && \ sed -i -e 's/^.*lda_mailbox_autosubscribe.*/lda_mailbox_autosubscribe = yes/g' /etc/dovecot/conf.d/15-lda.conf && \ sed -i -e 's/^.*postmaster_address.*/postmaster_address = '${POSTMASTER_ADDRESS:="postmaster@domain.com"}'/g' /etc/dovecot/conf.d/15-lda.conf && \ sed -i 's/#imap_idle_notify_interval = 2 mins/imap_idle_notify_interval = 29 mins/' /etc/dovecot/conf.d/20-imap.conf && \ # adapt mkcert for Dovecot community repo sed -i 's/CERTDIR=.*/CERTDIR=\/etc\/dovecot\/ssl/g' /usr/share/dovecot/mkcert.sh && \ sed -i 's/KEYDIR=.*/KEYDIR=\/etc\/dovecot\/ssl/g' /usr/share/dovecot/mkcert.sh && \ sed -i 's/KEYFILE=.*/KEYFILE=\$KEYDIR\/dovecot.key/g' /usr/share/dovecot/mkcert.sh && \ sed -i 's/RANDFILE.*//g' /usr/share/dovecot/dovecot-openssl.cnf && \ mkdir /etc/dovecot/ssl && \ chmod 755 /etc/dovecot/ssl && \ ./mkcert.sh 2>&1 >/dev/null && \ mkdir -p /usr/lib/dovecot/sieve-pipe /usr/lib/dovecot/sieve-filter /usr/lib/dovecot/sieve-global && \ chmod 755 -R /usr/lib/dovecot/sieve-pipe /usr/lib/dovecot/sieve-filter /usr/lib/dovecot/sieve-global # ––––––––––––––––––––––––––––––––––––––––––––––– # ––– LDAP & SpamAssassin's Cron –––––––––––––––– # ––––––––––––––––––––––––––––––––––––––––––––––– COPY target/dovecot/dovecot-ldap.conf.ext /etc/dovecot COPY \ target/postfix/ldap-users.cf \ target/postfix/ldap-groups.cf \ target/postfix/ldap-aliases.cf \ target/postfix/ldap-domains.cf \ /etc/postfix/ # hadolint ignore=SC2016 RUN \ sed -i -r 's/^(CRON)=0/\1=1/g' /etc/default/spamassassin && \ sed -i -r 's/^\$INIT restart/supervisorctl restart amavis/g' /etc/spamassassin/sa-update-hooks.d/amavisd-new # ––––––––––––––––––––––––––––––––––––––––––––––– # ––– Scripts & Miscellaneous ––––––––––––––––––– # ––––––––––––––––––––––––––––––––––––––––––––––– COPY \ ./target/bin/* \ ./target/scripts/*.sh \ ./target/scripts/startup/*.sh \ ./target/docker-configomat/configomat.sh \ /usr/local/bin/ RUN \ chmod +x /usr/local/bin/* && \ rm -rf /usr/share/locale/* && \ rm -rf /usr/share/man/* && \ rm -rf /usr/share/doc/* && \ touch /var/log/auth.log && \ update-locale && \ rm /etc/postsrsd.secret && \ rm /etc/cron.daily/00logwatch # ––––––––––––––––––––––––––––––––––––––––––––––– # ––– PostSRSD, Postgrey & Amavis ––––––––––––––– # ––––––––––––––––––––––––––––––––––––––––––––––– COPY target/postsrsd/postsrsd /etc/default/postsrsd COPY target/postgrey/postgrey /etc/default/postgrey COPY target/postgrey/postgrey.init /etc/init.d/postgrey RUN \ chmod 755 /etc/init.d/postgrey && \ mkdir /var/run/postgrey && \ chown postgrey:postgrey /var/run/postgrey COPY target/amavis/conf.d/* /etc/amavis/conf.d/ RUN \ sed -i -r 's/#(@| \\%)bypass/\1bypass/g' /etc/amavis/conf.d/15-content_filter_mode && \ adduser clamav amavis >/dev/null && \ adduser amavis clamav >/dev/null && \ # no syslog user in Debian compared to Ubuntu adduser --system syslog >/dev/null && \ useradd -u 5000 -d /home/docker -s /bin/bash -p "$(echo docker | openssl passwd -1 -stdin)" docker >/dev/null && \ echo "0 4 * * * /usr/local/bin/virus-wiper" | crontab - && \ chmod 644 /etc/amavis/conf.d/* # overcomplication necessary for CI RUN \ for _ in {1..10}; do su - amavis -c "razor-admin -create" ; sleep 3 ; \ if su - amavis -c "razor-admin -register" &>/dev/null; then { EC=0 ; break ; } ; \ else EC=${?} ; fi ; done ; (exit ${EC}) # ––––––––––––––––––––––––––––––––––––––––––––––– # ––– Fail2Ban, DKIM & DMARC –––––––––––––––––––– # ––––––––––––––––––––––––––––––––––––––––––––––– COPY target/fail2ban/jail.local /etc/fail2ban/jail.local RUN \ ln -s /var/log/mail/mail.log /var/log/mail.log && \ # disable sshd jail rm /etc/fail2ban/jail.d/defaults-debian.conf && \ mkdir /var/run/fail2ban COPY target/opendkim/opendkim.conf /etc/opendkim.conf COPY target/opendkim/default-opendkim /etc/default/opendkim COPY target/opendmarc/opendmarc.conf /etc/opendmarc.conf COPY target/opendmarc/default-opendmarc /etc/default/opendmarc COPY target/opendmarc/ignore.hosts /etc/opendmarc/ignore.hosts RUN \ # switch iptables and ip6tables to legacy for Fail2Ban update-alternatives --set iptables /usr/sbin/iptables-legacy && \ update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy # ––––––––––––––––––––––––––––––––––––––––––––––– # ––– Fetchmail, Postfix & Let'sEncrypt ––––––––– # ––––––––––––––––––––––––––––––––––––––––––––––– COPY target/fetchmail/fetchmailrc /etc/fetchmailrc_general COPY target/postfix/main.cf target/postfix/master.cf /etc/postfix/ COPY target/shared/ffdhe4096.pem /etc/postfix/shared/ffdhe4096.pem COPY \ target/postfix/header_checks.pcre \ target/postfix/sender_header_filter.pcre \ target/postfix/sender_login_maps.pcre \ /etc/postfix/maps/ RUN \ : >/etc/aliases && \ sed -i 's/START_DAEMON=no/START_DAEMON=yes/g' /etc/default/fetchmail && \ mkdir /var/run/fetchmail && chown fetchmail /var/run/fetchmail && \ curl -s https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.pem >/etc/ssl/certs/lets-encrypt-x3-cross-signed.pem # ––––––––––––––––––––––––––––––––––––––––––––––– # ––– Logs –––––––––––––––––––––––––––––––––––––– # ––––––––––––––––––––––––––––––––––––––––––––––– RUN \ sed -i -r "/^#?compress/c\compress\ncopytruncate" /etc/logrotate.conf && \ mkdir -p /var/log/mail && \ chown syslog:root /var/log/mail && \ touch /var/log/mail/clamav.log && \ chown -R clamav:root /var/log/mail/clamav.log && \ touch /var/log/mail/freshclam.log && \ chown -R clamav:root /var/log/mail/freshclam.log && \ sed -i -r 's|/var/log/mail|/var/log/mail/mail|g' /etc/rsyslog.conf && \ sed -i -r 's|;auth,authpriv.none|;mail.none;mail.error;auth,authpriv.none|g' /etc/rsyslog.conf && \ sed -i -r 's|LogFile /var/log/clamav/|LogFile /var/log/mail/|g' /etc/clamav/clamd.conf && \ sed -i -r 's|UpdateLogFile /var/log/clamav/|UpdateLogFile /var/log/mail/|g' /etc/clamav/freshclam.conf && \ sed -i -r 's|/var/log/clamav|/var/log/mail|g' /etc/logrotate.d/clamav-daemon && \ sed -i -r 's|invoke-rc.d.*|/usr/bin/supervisorctl signal hup clamav >/dev/null \|\| true|g' /etc/logrotate.d/clamav-daemon && \ sed -i -r 's|/var/log/clamav|/var/log/mail|g' /etc/logrotate.d/clamav-freshclam && \ sed -i -r '/postrotate/,/endscript/d' /etc/logrotate.d/clamav-freshclam && \ sed -i -r 's|/var/log/mail|/var/log/mail/mail|g' /etc/logrotate.d/rsyslog && \ sed -i -r '/\/var\/log\/mail\/mail.log/d' /etc/logrotate.d/rsyslog && \ # prevent syslog logrotate warnings sed -i -e 's/\(printerror "could not determine current runlevel"\)/#\1/' /usr/sbin/invoke-rc.d && \ sed -i -e 's/^\(POLICYHELPER=\).*/\1/' /usr/sbin/invoke-rc.d && \ # prevent syslog warning about imklog permissions sed -i -e 's/^module(load=\"imklog\")/#module(load=\"imklog\")/' /etc/rsyslog.conf && \ # prevent email when /sbin/init or init system is not existing sed -i -e 's|invoke-rc.d rsyslog rotate > /dev/null|/usr/bin/supervisorctl signal hup rsyslog >/dev/null|g' /usr/lib/rsyslog/rsyslog-rotate # ––––––––––––––––––––––––––––––––––––––––––––––– # ––– Supervisord & Start ––––––––––––––––––––––– # ––––––––––––––––––––––––––––––––––––––––––––––– COPY target/supervisor/supervisord.conf /etc/supervisor/supervisord.conf COPY target/supervisor/conf.d/* /etc/supervisor/conf.d/ WORKDIR / EXPOSE 25 587 143 465 993 110 995 4190 ENTRYPOINT ["/usr/bin/dumb-init", "--"] CMD ["supervisord", "-c", "/etc/supervisor/supervisord.conf"]