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FROM docker.io/library/alpine:latest
COPY aliases /etc/postfix/aliases
COPY master.cf /etc/postfix/master.cf
COPY main.cf /etc/postfix/main.cf
COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh
RUN mkdir /etc/postfix/sasl && chmod 700 /etc/postfix/sasl
RUN mkdir /etc/sasl2
COPY smtpd.conf /etc/sasl2/smtpd.conf
RUN addgroup -S mailer
RUN adduser -SD -s /bin/sh -G mailer -g mailer mailer
RUN apk add --no-cache postfix cyrus-sasl
EXPOSE 25
EXPOSE 465
ENTRYPOINT ["/entrypoint.sh"]
CMD ["postfix", "start-fg"]