Add unbound

Signed-off-by: Christian Richter <crichter@owncloud.com>

unbound/Dockerfile

@@ -0,0 +1,5 @@
+FROM debian:latest
+LABEL maintainer="dragonchaser <autobuilds@datenschmutz.space>"
+RUN apt-get update \
+  && apt-get -y install unbound netcat
+CMD ["unbound-checkconf", "&&", "unbound -d"]

unbound/README.md

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+# unbound
+
+A container for unbound https://github.com/NLnetLabs/unbound
+
+## Running locally
+
+**amd64**
+
+```
+$> docker run \
+    -p 53:53 \
+    -v /path/to/you/local/unboundfolder/conf:/etc/unbound \
+    -v /path/to/you/local/unboundfolder/lib:/var/lib/unbound \
+    dragonchaser/unbound:latest-amd64 
+```
+
+**arm64**
+
+```
+$> docker run \
+    -p 53:53 \
+    -v /path/to/you/local/unboundfolder/conf:/etc/unbound \
+    -v /path/to/you/local/unboundfolder/lib:/var/lib/unbound \
+    dragonchaser/unbound:latest-arm64 
+```
+