31 lines
734 B
Docker
31 lines
734 B
Docker
FROM debian:bookworm-slim
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# install oostfix and OpenDKIM
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RUN apt-get update && apt-get install -y \
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postfix \
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opendkim \
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opendkim-tools \
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mailutils \
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ca-certificates \
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netcat-openbsd \
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&& rm -rf /var/lib/apt/lists/*
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# create OpenDKIM paths
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RUN mkdir -p /etc/opendkim/keys && \
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chown -R opendkim:opendkim /etc/opendkim && \
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chmod 700 /etc/opendkim/keys
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# copy config
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COPY postfix-main.cf /etc/postfix/main.cf
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COPY opendkim.conf /etc/opendkim.conf
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COPY entrypoint.sh /entrypoint.sh
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RUN chmod +x /entrypoint.sh
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EXPOSE 25
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HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
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CMD echo "QUIT" | nc -w 5 localhost 25 | grep -q "220" || exit 1
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ENTRYPOINT ["/entrypoint.sh"]
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