53 lines
1.2 KiB
Docker
53 lines
1.2 KiB
Docker
FROM debian:buster-slim
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ENV \
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DEBIAN_FRONTEND=noninteractive \
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DOMAINNAME=example.com \
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MAILNAME=mail \
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POSTMASTER=postmaster@example.com \
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SSL_CERT=/etc/ssl/mailserver.crt \
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SSL_KEY=/etc/ssl/mailserver.key
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# Install packages
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RUN \
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apt-get update \
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&& apt-get upgrade -y \
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&& apt-get install -y --no-install-recommends \
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postfix \
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telnet \
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dovecot-core \
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dovecot-pop3d \
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dovecot-imapd \
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dovecot-lmtpd \
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supervisor \
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rsyslog \
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opendkim \
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opendkim-tools \
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openssl \
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&& apt-get autoclean \
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&& apt-get autoremove
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# Setup folders and users
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RUN \
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rm /etc/postfix/main.cf /etc/postfix/master.cf /etc/dovecot/dovecot.conf /etc/dovecot/conf.d/* /etc/rsyslog.conf /etc/rsyslog.d/* \
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&& groupadd -g 2222 vmail \
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&& useradd -d /var/mail -M -s /usr/sbin/nologin -u 2222 -g 2222 vmail \
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&& usermod -aG vmail postfix \
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&& usermod -aG vmail dovecot \
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&& usermod -aG vmail opendkim\
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&& mkdir -p -m 751 /var/mail/ \
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&& mkdir -p -m 755 /etc/mail/ \
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&& mkdir -p -m 755 /etc/ssl/ \
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&& mkdir -p -m 700 /etc/opendkim/keys \
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&& chown vmail:vmail /var/mail \
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&& chown opendkim:opendkim /etc/opendkim/keys
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# Copy config files
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COPY rootfs/ /
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# Expose ports
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EXPOSE 25 143 587 993
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# Run start script
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ENTRYPOINT /usr/bin/start.sh
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