Add brubeck dockerfile

Dockerfile-brubeck

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+FROM ubuntu:14.04
+MAINTAINER Gregory Eremin <g@erem.in>
+LABEL app="brubeck"
+LABEL github="https://github.com/github/brubeck"
+
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update
+RUN apt-get install -y libjansson-dev
+RUN apt-get install -y libssl-dev
+RUN apt-get install -y libmicrohttpd-dev
+RUN apt-get install -y git
+RUN apt-get install -y make
+
+RUN mkdir /build
+RUN cd /build && git clone https://github.com/github/brubeck.git
+WORKDIR /build/brubeck
+RUN ./script/bootstrap
+
+COPY configs/brubeck.json /etc/brubeck.json
+EXPOSE 8080 8126 9126
+ENTRYPOINT ./brubeck --config=/etc/brubeck.json

configs/brubeck.json

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+{
+    "sharding": false,
+    "server_name": "Brubeck",
+    "dumpfile": "./brubeck.dump",
+    "capacity": 15,
+    "expire": 20,
+    "http": ":8080",
+    "backends": [
+        {
+            "type": "carbon",
+            "address": "localhost",
+            "port": 2003,
+            "frequency": 10
+        }
+    ],
+    "samplers": [
+        {
+            "type": "statsd",
+            "address": "0.0.0.0",
+            "port": 8126,
+            "workers": 4,
+            "multisock": true,
+            "multimsg": 8
+        },
+        {
+            "type": "statsd-secure",
+            "address": "0.0.0.0",
+            "port": 9126,
+            "max_drift": 3,
+            "hmac_key": "750c783e6ab0b503eaa86e310a5db738",
+            "replay_len": 8000
+        }
+    ]
+}