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- FROM alpine:3.18
- LABEL maintainer "The Infrastructure Company GmbH GmbH <info@servercow.de>"
- RUN apk add --update --no-cache \
- curl \
- bind-tools \
- netcat-openbsd \
- unbound \
- bash \
- openssl \
- drill \
- tzdata \
- && curl -o /etc/unbound/root.hints https://www.internic.net/domain/named.cache \
- && chown root:unbound /etc/unbound \
- && adduser unbound tty \
- && chmod 775 /etc/unbound
- EXPOSE 53/udp 53/tcp
- COPY docker-entrypoint.sh /docker-entrypoint.sh
- # healthcheck (nslookup)
- COPY healthcheck.sh /healthcheck.sh
- RUN chmod +x /healthcheck.sh
- HEALTHCHECK --interval=5s --timeout=30s CMD [ "/healthcheck.sh" ]
- ENTRYPOINT ["/docker-entrypoint.sh"]
- CMD ["/usr/sbin/unbound"]
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