Added support for Windows host (via Docker)

Dockerfile

@@ -0,0 +1,18 @@
+FROM ubuntu:18.04
+
+RUN apt-get update \
+    && apt-get install -y curl gnupg \
+    && curl -fsSL https://deb.nodesource.com/setup_8.x -o /tmp/node_setup.sh \
+    && bash /tmp/node_setup.sh \
+    && rm /tmp/node_setup.sh \
+    && apt-get install -y nodejs git make g++ libboost-dev libboost-system-dev libboost-date-time-dev \
+    && git clone https://github.com/MoneroOcean/xmr-node-proxy /xmr-node-proxy \
+    && cd /xmr-node-proxy \
+    && npm install \
+    && cp -n config_example.json config.json \
+    && openssl req -subj "/C=IT/ST=Pool/L=Daemon/O=Mining Pool/CN=mining.proxy" -newkey rsa:2048 -nodes -keyout cert.key -x509 -out cert.pem -days 36500
+
+EXPOSE 8080 8443 3333
+
+WORKDIR /xmr-node-proxy
+CMD ./update.sh && node proxy.js