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FROM alpine:3.9 as build
WORKDIR /opensmtpd
# libressl is used for testing only
RUN apk add --no-cache \
ca-certificates \
automake \
autoconf \
libtool \
gcc \
make \
musl-dev \
bison \
libevent-dev \
libtool \
libasr-dev \
fts-dev \
zlib-dev \
libressl-dev \
libressl
#For testing
RUN mkdir -p /var/lib/opensmtpd/empty/ && \
adduser _smtpd -h /var/lib/opensmtpd/empty/ -D -H -s /bin/false && \
adduser _smtpq -h /var/lib/opensmtpd/empty/ -D -H -s /bin/false && \
mkdir -p /var/spool/smtpd && \
chmod 711 /var/spool/smtpd
COPY . /opensmtpd
#build opensmtpd
RUN rm -r /usr/local/
RUN ./bootstrap && \
./configure --with-gnu-ld --sysconfdir=/etc/mail --with-path-empty=/var/lib/opensmtpd/empty/ && \
make && \
make install
FROM alpine:3.9
LABEL maintainer="Arthur Moore <Arthur.Moore.git@cd-net.net>"
EXPOSE 25
EXPOSE 465
EXPOSE 587
VOLUME /etc/mail
VOLUME /var/spool/smtpd
WORKDIR /var/spool/smtpd
ENTRYPOINT ["smtpd", "-d"]
CMD ["-P", "mda"]
RUN apk add --no-cache libressl libevent libasr fts zlib ca-certificates && \
mkdir -p /var/lib/opensmtpd/empty/ && \
adduser _smtpd -h /var/lib/opensmtpd/empty/ -D -H -s /bin/false && \
adduser _smtpq -h /var/lib/opensmtpd/empty/ -D -H -s /bin/false && \
mkdir -p /etc/mail/ && \
mkdir -p /var/spool/smtpd && \
chmod 711 /var/spool/smtpd
COPY --from=build /usr/local/ /usr/local/
COPY smtpd/smtpd.conf /etc/mail
#OpenSMTPD needs root permissions to open port 25.
#It immediately changes to running as _smtpd after that.
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