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docker-mailserver/Dockerfile
Brennan Kinney 4db546d300
fix: Don't needlessly invalidate cache layers (#2197) 
Recent `sedfile` addition moved all scripts section earlier into the Dockerfile so that `sedfile` could be used within the Dockerfile.

However whenever a change is made to scripts which is most of the time for this project, building the Docker image for tests results in all layers after the scripts being invalidated, notably ClamAV, wasting storage of previous instances and increasing build time unnecessarily.

This isn't as noticeable of an issue via the CI as we don't leverage any caching at present there, but for iterating on a local branch and testing, it can be quite the drawback.

- `sedfile` is handled early in the Dockerfile still, while the scripts have been moved as far down as it made sense to.
- `chmod` was split out into it's own RUN command as again it's unnecessary for the rest of it's prior RUN command group to be invalidated.
2021-09-19 12:36:26 +00:00

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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=${FAIL2BAN_DEB_URL}.asc
ARG FAIL2BAN_GPG_PUBLIC_KEY_ID=0x683BF1BEBD0A882C
ARG FAIL2BAN_GPG_PUBLIC_KEY_SERVER=hkps://keyserver.ubuntu.com
ARG FAIL2BAN_GPG_FINGERPRINT="8738 559E 26F6 71DF 9E2C 6D9E 683B F1BE BD0A 882C"
LABEL org.opencontainers.image.version=${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=1
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 \
# Backport repo for dovecot-fts-xapian package. This can be removed once Debian 11 is used as base image.
echo 'deb http://deb.debian.org/debian buster-backports main' > /etc/apt/sources.list.d/buster-backports.list && \
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 \
dbconfig-no-thanks dovecot-core dovecot-fts-xapian 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 uuid 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
COPY ./target/bin/sedfile /usr/local/bin/sedfile
RUN chmod +x /usr/local/bin/sedfile
# -----------------------------------------------
# --- ClamAV & FeshClam -------------------------
# -----------------------------------------------
RUN \
echo '0 */6 * * * clamav /usr/bin/freshclam --quiet' >/etc/cron.d/clamav-freshclam && \
chmod 644 /etc/clamav/freshclam.conf && \
freshclam && \
sedfile -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 -----------------------------------
# -----------------------------------------------
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 \
sedfile -i -e 's/include_try \/usr\/share\/dovecot\/protocols\.d/include_try \/etc\/dovecot\/protocols\.d/g' /etc/dovecot/dovecot.conf && \
sedfile -i -e 's/#mail_plugins = \$mail_plugins/mail_plugins = \$mail_plugins sieve/g' /etc/dovecot/conf.d/15-lda.conf && \
sedfile -i -e 's/^.*lda_mailbox_autocreate.*/lda_mailbox_autocreate = yes/g' /etc/dovecot/conf.d/15-lda.conf && \
sedfile -i -e 's/^.*lda_mailbox_autosubscribe.*/lda_mailbox_autosubscribe = yes/g' /etc/dovecot/conf.d/15-lda.conf && \
sedfile -i -e 's/^.*postmaster_address.*/postmaster_address = '${POSTMASTER_ADDRESS:="postmaster@domain.com"}'/g' /etc/dovecot/conf.d/15-lda.conf && \
mkdir -p /usr/lib/dovecot/sieve-pipe /usr/lib/dovecot/sieve-filter /usr/lib/dovecot/sieve-global && \
chmod 755 -R /usr/lib/dovecot/sieve-pipe /usr/lib/dovecot/sieve-filter /usr/lib/dovecot/sieve-global
# -----------------------------------------------
# --- LDAP & SpamAssassin's Cron ----------------
# -----------------------------------------------
COPY target/dovecot/dovecot-ldap.conf.ext /etc/dovecot
COPY \
target/postfix/ldap-users.cf \
target/postfix/ldap-groups.cf \
target/postfix/ldap-aliases.cf \
target/postfix/ldap-domains.cf \
target/postfix/ldap-senders.cf \
/etc/postfix/
# hadolint ignore=SC2016
RUN \
sedfile -i -r 's/^(CRON)=0/\1=1/g' /etc/default/spamassassin && \
sedfile -i -r 's/^\$INIT restart/supervisorctl restart amavis/g' /etc/spamassassin/sa-update-hooks.d/amavisd-new
# -----------------------------------------------
# --- PostSRSD, Postgrey & Amavis ---------------
# -----------------------------------------------
COPY target/postsrsd/postsrsd /etc/default/postsrsd
COPY target/postgrey/postgrey /etc/default/postgrey
COPY target/postgrey/postgrey.init /etc/init.d/postgrey
RUN \
chmod 755 /etc/init.d/postgrey && \
mkdir /var/run/postgrey && \
chown postgrey:postgrey /var/run/postgrey && \
curl -Lsfo /etc/postgrey/whitelist_clients https://postgrey.schweikert.ch/pub/postgrey_whitelist_clients
COPY target/amavis/conf.d/* /etc/amavis/conf.d/
RUN \
sedfile -i -r 's/#(@| \\%)bypass/\1bypass/g' /etc/amavis/conf.d/15-content_filter_mode && \
# add users clamav and amavis to each others group
adduser clamav amavis && \
adduser amavis clamav && \
# no syslog user in Debian compared to Ubuntu
adduser --system syslog && \
useradd -u 5000 -d /home/docker -s /bin/bash -p "$(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/
# DH parameters for DHE cipher suites, ffdhe4096 is the official standard 4096-bit DH params now part of TLS 1.3
# This file is for TLS <1.3 handshakes that rely on DHE cipher suites
# Handled at build to avoid failures by doveadm validating ssl_dh filepath in 10-ssl.auth (eg generate-accounts)
COPY target/shared/ffdhe4096.pem /etc/postfix/dhparams.pem
COPY target/shared/ffdhe4096.pem /etc/dovecot/dh.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 && \
sedfile -i 's/START_DAEMON=no/START_DAEMON=yes/g' /etc/default/fetchmail && \
mkdir /var/run/fetchmail && chown fetchmail /var/run/fetchmail
# -----------------------------------------------
# --- Logs --------------------------------------
# -----------------------------------------------
RUN \
sedfile -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 && \
sedfile -i -r 's|/var/log/mail|/var/log/mail/mail|g' /etc/rsyslog.conf && \
sedfile -i -r 's|;auth,authpriv.none|;mail.none;mail.error;auth,authpriv.none|g' /etc/rsyslog.conf && \
sedfile -i -r 's|LogFile /var/log/clamav/|LogFile /var/log/mail/|g' /etc/clamav/clamd.conf && \
sedfile -i -r 's|UpdateLogFile /var/log/clamav/|UpdateLogFile /var/log/mail/|g' /etc/clamav/freshclam.conf && \
sedfile -i -r 's|/var/log/clamav|/var/log/mail|g' /etc/logrotate.d/clamav-daemon && \
sedfile -i -r 's|invoke-rc.d.*|/usr/bin/supervisorctl signal hup clamav >/dev/null \|\| true|g' /etc/logrotate.d/clamav-daemon && \
sedfile -i -r 's|/var/log/clamav|/var/log/mail|g' /etc/logrotate.d/clamav-freshclam && \
sedfile -i -r '/postrotate/,/endscript/d' /etc/logrotate.d/clamav-freshclam && \
sedfile -i -r 's|/var/log/mail|/var/log/mail/mail|g' /etc/logrotate.d/rsyslog && \
sedfile -i -r '/\/var\/log\/mail\/mail.log/d' /etc/logrotate.d/rsyslog && \
# prevent syslog logrotate warnings
sedfile -i -e 's/\(printerror "could not determine current runlevel"\)/#\1/' /usr/sbin/invoke-rc.d && \
sedfile -i -e 's/^\(POLICYHELPER=\).*/\1/' /usr/sbin/invoke-rc.d && \
# prevent syslog warning about imklog permissions
sedfile -i -e 's/^module(load=\"imklog\")/#module(load=\"imklog\")/' /etc/rsyslog.conf && \
# prevent email when /sbin/init or init system is not existing
sedfile -i -e 's|invoke-rc.d rsyslog rotate > /dev/null|/usr/bin/supervisorctl signal hup rsyslog >/dev/null|g' /usr/lib/rsyslog/rsyslog-rotate
# -----------------------------------------------
# --- Logwatch ----------------------------------
# -----------------------------------------------
COPY target/logwatch/maillog.conf /etc/logwatch/conf/logfiles/maillog.conf
# -----------------------------------------------
# --- Supervisord & Start -----------------------
# -----------------------------------------------
COPY target/supervisor/supervisord.conf /etc/supervisor/supervisord.conf
COPY target/supervisor/conf.d/* /etc/supervisor/conf.d/
# -----------------------------------------------
# --- Scripts & Miscellaneous--------------------
# -----------------------------------------------
RUN \
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
COPY ./VERSION /
COPY \
./target/bin/* \
./target/scripts/*.sh \
./target/scripts/startup/*.sh \
./target/docker-configomat/configomat.sh \
/usr/local/bin/
RUN chmod +x /usr/local/bin/*
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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