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data/Dockerfiles/unbound/Dockerfile

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+FROM alpine:3.20
+
+LABEL maintainer = "The Infrastructure Company GmbH <info@servercow.de>"
+
+RUN apk add --update --no-cache \
+	curl \
+	bind-tools \
+	coreutils \
+	unbound \
+	bash \
+	openssl \
+	drill \
+	tzdata \
+	syslog-ng \
+	supervisor \
+	&& 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 (dig, ping)
+COPY healthcheck.sh /healthcheck.sh
+COPY syslog-ng.conf /etc/syslog-ng/syslog-ng.conf
+COPY supervisord.conf /etc/supervisor/supervisord.conf
+COPY stop-supervisor.sh /usr/local/sbin/stop-supervisor.sh
+
+RUN chmod +x /healthcheck.sh
+HEALTHCHECK --interval=30s --timeout=10s \
+  CMD sh -c '[ -f /tmp/healthcheck_status ] && [ "$(cat /tmp/healthcheck_status)" -eq 0 ] || exit 1'
+
+ENTRYPOINT ["/docker-entrypoint.sh"]
+CMD ["/usr/bin/supervisord", "-c", "/etc/supervisor/supervisord.conf"]