ARG DISTRO=alpine:3.10
FROM $DISTRO
# python3 shared with most images
RUN apk add --no-cache \
    python3 py3-pip git bash \
  && pip3 install --upgrade pip

# Shared layer between nginx, dovecot, postfix, postgresql, rspamd, unbound, rainloop, roundcube
RUN pip3 install socrate

# Shared layer between dovecot and postfix
RUN pip3 install "podop>0.2.5"

# Image specific layers under this line
RUN apk add --no-cache postfix postfix-pcre cyrus-sasl-plain

COPY conf /conf
COPY start.py /start.py

EXPOSE 25/tcp 10025/tcp
VOLUME ["/data"]

CMD /start.py

HEALTHCHECK --start-period=350s CMD echo QUIT|nc localhost 25|grep "220 .* ESMTP Postfix"