FROM alpine:3.15

RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories  \
    && apk add dovecot-pgsql dovecot-lmtpd \
    && rm -rf /var/cache/apk/*

EXPOSE 143 993

CMD ["/usr/sbin/dovecot", "-F"]