FROM registry.fk.jochum.dev/docker_hub_cache/library/debian:bullseye-slim

LABEL maintainer "René Jochum <rene@jochum.dev>"

ENV DEBIAN_FRONTEND noninteractive

# Configure Proxy
RUN set -ex; \
    sed -i 's/deb.debian.org/ftp.ch.debian.org/g' /etc/apt/sources.list && \
    apt-get update --allow-releaseinfo-change && \
    apt-get install -qy netcat-openbsd && \
    sed -i 's/ftp.ch.debian.org/deb.debian.org/g' /etc/apt/sources.list || exit 0 && \
    if [ -z "$APT_CACHER" ]; then APT_CACHER="apt-cacher.apt-cacher.svc.cluster.local"; fi && \
    if nc -w1 -z $APT_CACHER 3142 1>/dev/null 2>&1; then \
    echo 'Acquire::HTTP::Proxy "http://'$APT_CACHER':3142";' >> /etc/apt/apt.conf.d/01proxy && \
    echo 'Acquire::HTTPS::Proxy "false";' >> /etc/apt/apt.conf.d/01proxy; else exit 0; fi

RUN set -ex; \
    echo "postfix postfix/mailname string mail.example.com" | debconf-set-selections && \
    echo "postfix postfix/main_mailer_type string 'No configuration'" | debconf-set-selections && \
    apt-get update --allow-releaseinfo-change && \
    apt-get install -qy -o 'DPkg::Options::=--force-confold' -o 'DPkg::Options::=--force-confdef' postfix postfix-pgsql postfix-mysql postfix-pcre python3-minimal python3-jinja2

RUN rm -f /etc/apt/apt.conf.d/01proxy

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

EXPOSE 25/tcp 465/tcp 587/tcp

VOLUME ["/overrides", "/cert"]

CMD /start.py