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ARG DISTRO=alpine:3.14.5
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FROM $DISTRO
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ARG VERSION
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ENV TZ Etc/UTC
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LABEL version=$VERSION
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# python3 shared with most images
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RUN apk add --no-cache \
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python3 py3-pip git bash py3-multidict tzdata \
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&& pip3 install --upgrade pip
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# Shared layer between nginx, dovecot, postfix, postgresql, rspamd, unbound, snappymail, roundcube
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RUN pip3 install socrate==0.2.0
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# Image specific layers under this line
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RUN apk add --no-cache unbound curl bind-tools \
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&& curl -o /etc/unbound/root.hints https://www.internic.net/domain/named.cache \
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&& chown root:unbound /etc/unbound \
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&& chmod 775 /etc/unbound \
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&& apk del --no-cache curl \
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&& /usr/sbin/unbound-anchor -a /etc/unbound/trusted-key.key | true
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COPY start.py /start.py
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COPY unbound.conf /unbound.conf
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EXPOSE 53/udp 53/tcp
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CMD /start.py
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HEALTHCHECK CMD dig @127.0.0.1 || exit 1
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RUN echo $VERSION >> /version
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