FROM almalinux:9 RUN useradd -m -s /bin/false vmail RUN dnf install -y epel-release dnf-plugins-core \ && dnf update -y \ && dnf config-manager --enable crb \ && dnf clean all \ && rm -rf /var/cache/yum RUN dnf install -y postfix-3.5.9 postfix-ldap-3.5.9 postfix-mysql-3.5.9 postfix-pgsql-3.5.9 \ dovecot-2.3.16 dovecot-pigeonhole-2.3.16 opendkim-2.11.0 opendmarc-1.4.2 \ cyrus-sasl cyrus-sasl-plain cyrus-sasl-md5 pypolicyd-spf \ && dnf clean all \ && rm -rf /var/cache/yum #RUN postconf -e inet_interfaces=all EXPOSE 25 465 587 CMD ["postfix", "start-fg"]