add docker file for RelayNode

docker/Dockerfile

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+#
+# Dockerfile
+#
+# @author [email protected]
+# @since 2016-01
+#
+#
+FROM phusion/baseimage:0.9.16
+MAINTAINER PanZhibiao <[email protected]>
+
+ENV HOME /root
+ENV TERM xterm
+CMD ["/sbin/my_init"]
+
+# install packages
+RUN apt-get update
+RUN apt-get install -y git build-essential yasm
+
+# build
+RUN cd /root \
+  && git clone https://github.com/TheBlueMatt/RelayNode.git \
+  && cd RelayNode/c++ \
+  && make
+
+# daemons
+RUN mkdir /etc/service/relaynode
+ADD run /etc/service/relaynode/run
+RUN chmod +x /etc/service/relaynode/run

docker/README.md

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+Docker for RelayNode
+=======================
+* base on: https://github.com/phusion/baseimage-docker
+  * ubuntu 14.04 LTS
+* mark sure bitcoind's host & port is current in file `run`
+  * `BITCOIND_HOST` is bitcoind's lan/wan ip, do NOT use `127.0.0.1`
+  * `BITCOIND_PORT` is default `8333`
+
+**install docker**
+
+```
+wget -qO- https://get.docker.com/ | sh
+service docker start
+service docker status
+```
+
+**build image**
+
+```
+# supposed Dockerfile path: /root/RelayNode/docker/Dockerfile
+cd /root/RelayNode/docker
+
+# before build, please modify `BITCOIND_HOST` in `run`
+docker build -t relaynode:0.1 .
+```
+
+**start**
+
+```
+docker run -it --name relaynode --restart always -d relaynode:0.1
+```
+
+**exec docker**
+
+```
+docker exec -it relaynode /bin/bash
+
+# eg. watch logs in docker
+less /var/log/relaynode.log
+```

docker/run

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+#!/bin/bash
+
+EXEC=/root/RelayNode/c++/relaynetworkclient
+BITCOIND_HOST=192.168.1.1
+BITCOIND_PORT=8333
+
+$EXEC $BITCOIND_HOST $BITCOIND_PORT >> /var/log/relaynode.log 2>&1