Initial commit

Dockerfile

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+FROM debian:buster
+
+EXPOSE 25 465 587
+
+RUN DEBIAN_FRONTEND=noninteractive && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends \
+        postfix \
+        postfix-ldap \
+        rsyslog \
+        supervisor \
+        ca-certificates &&\
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+ADD entrypoint.sh /
+RUN chmod +x /entrypoint.sh
+
+ADD supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+
+VOLUME /var/spool/postfix
+
+#ENTRYPOINT ["/entrypoint.sh"]
+ENTRYPOINT ["supervisord"]
+

entrypoint.sh

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+#!/bin/bash
+
+CHROOTSERV=$(awk '/^[0-9a-z]/ && ($5 ~ "[-yY]") { print $1; exit}' /etc/postfix/master.cf)
+
+if [ -n "${CHROOTSERV}" ]; then
+	echo "The service $CHROOTSERV is configured to use chroot. Please change it in master.cf" >&2
+	exit 1
+fi
+
+#Test config
+echo -n "Checking configuration... "
+postfix check || exit 2
+echo "OK"
+
+#Create aliases
+echo -n "Creating new aliases..."
+newaliases
+echo "OK"
+
+exec /usr/lib/postfix/sbin/master -c /etc/postfix -d # 2>&1
+

supervisord.conf

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+[supervisord]
+nodaemon=true
+
+[program:rsyslog]
+command=/usr/sbin/rsyslogd -n
+
+[program:postfix]
+command=/entrypoint.sh
+