17 lines
496 B
Docker
17 lines
496 B
Docker
FROM alpine
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RUN set -eux; \
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apk --update --no-cache add shadow opensmtpd opensmtpd-filter-dkimsign; \
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install -dm 711 /var/spool/smtpd; \
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groupmod -g 601 smtpd; \
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groupmod -g 602 smtpq; \
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groupmod -g 603 dkimsign; \
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usermod -u 601 -g smtpd smtpd; \
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usermod -u 602 -g smtpq smtpq; \
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usermod -u 603 -g dkimsign dkimsign; \
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chgrp smtpq /usr/sbin/smtpctl; \
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chmod g+s /usr/sbin/smtpctl; \
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apk del shadow
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EXPOSE 25
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EXPOSE 465
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EXPOSE 587
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CMD ["smtpd", "-d"]
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