docker/postfix/Dockerfile

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FROM almalinux:8
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RUN useradd -m -s /bin/false vmail
RUN dnf install -y epel-release && dnf update -y \
&& dnf clean all \
&& rm -rf /var/cache/yum
RUN dnf install -y postfix-3.5.8 postfix-ldap-3.5.8 postfix-mysql-3.5.8 postfix-pgsql-3.5.8 \
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dovecot-2.3.16 dovecot-pigeonhole-2.3.16 opendkim-2.11.0 opendmarc-1.4.1.1 \
cyrus-sasl cyrus-sasl-plain cyrus-sasl-md5 pypolicyd-spf \
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&& dnf clean all \
&& rm -rf /var/cache/yum
#RUN postconf -e inet_interfaces=all
EXPOSE 25 465 587
CMD ["postfix", "start-fg"]