FROM alpine:3

RUN apk add --update --no-cache \
        bash \
        nano \
        curl \ 
        postfix \
        postfix-ldap \
        postfix-pcre \
        postfix-policyd-spf-perl \
        ca-certificates

RUN update-ca-certificates && \
    mkdir /cert && \
    chown 100:101 /cert

COPY --chown=root:root start.sh config /

VOLUME /config
VOLUME /cert
VOLUME /var/spool/postfix

EXPOSE 10025/tcp
EXPOSE 10465/tcp

USER root

CMD ["/start.sh"]