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FROM debian:bookworm-slim
RUN apt-get update && apt-get install -y --no-install-recommends \
postfix \
libsasl2-modules \
opendkim \
opendkim-tools \
rsyslog \
&& rm -rf /var/lib/apt/lists/*
COPY postfix/main.cf /etc/postfix/main.cf
COPY opendkim/opendkim.conf /etc/opendkim.conf
COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh
EXPOSE 25
ENTRYPOINT ["/entrypoint.sh"]
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