github-com-docker-mailserver/docker-mailserver
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docker-mailserver/Dockerfile

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FROM docker.io/debian:buster-slim
ARG VCS_VER
ARG VCS_REF
ARG DEBIAN_FRONTEND=noninteractive
ARG FAIL2BAN_DEB_URL=https://github.com/fail2ban/fail2ban/releases/download/0.11.2/fail2ban_0.11.2-1.upstream1_all.deb
ARG FAIL2BAN_DEB_ASC_URL=${FAIL2BAN_DEB_URL}.asc
ARG FAIL2BAN_GPG_PUBLIC_KEY_ID=0x683BF1BEBD0A882C
ARG FAIL2BAN_GPG_PUBLIC_KEY_SERVER=keys.gnupg.net
ARG FAIL2BAN_GPG_FINGERPRINT="8738 559E 26F6 71DF 9E2C 6D9E 683B F1BE BD0A 882C"
LABEL org.opencontainers.image.version=${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 -qq install apt-utils 2>/dev/null && \
apt-get -qq dist-upgrade && \
apt-get -qq install postfix && \
apt-get -qq --no-install-recommends install \
# A - D
altermime amavisd-new apt-transport-https arj binutils bzip2 bsd-mailx \
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 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 && \
# Fail2Ban
gpg --keyserver ${FAIL2BAN_GPG_PUBLIC_KEY_SERVER} \
--recv-keys ${FAIL2BAN_GPG_PUBLIC_KEY_ID} 2>&1 && \
curl -Lkso fail2ban.deb ${FAIL2BAN_DEB_URL} && \
curl -Lkso fail2ban.deb.asc ${FAIL2BAN_DEB_ASC_URL} && \
FINGERPRINT="$(LANG=C gpg --verify \
fail2ban.deb.asc fail2ban.deb 2>&1 \
| sed -n 's#Primary key fingerprint: \(.*\)#\1#p')" && \
if [[ -z ${FINGERPRINT} ]]; then \
echo "ERROR: Invalid GPG signature!" >&2; exit 1; fi && \
if [[ ${FINGERPRINT} != "${FAIL2BAN_GPG_FINGERPRINT}" ]]; then \
echo "ERROR: Wrong GPG fingerprint!" >&2; exit 1; fi && \
dpkg -i fail2ban.deb 2>&1 && \
rm fail2ban.deb fail2ban.deb.asc && \
# cleanup
apt-get -qq autoremove && \
apt-get -qq autoclean && \
apt-get -qq clean && \
rm -rf /var/lib/apt/lists/* && \
c_rehash 2>&1
# -----------------------------------------------
# --- 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 && \
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 \
target/postfix/ldap-senders.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/
COPY \
./VERSION /
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 && \
adduser amavis clamav && \
# no syslog user in Debian compared to Ubuntu
adduser --system syslog && \
useradd -u 5000 -d /home/docker -s /bin/bash -p "$(echo docker | openssl passwd -1 -stdin)" docker && \
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" ; 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"]
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