Adds a Dockerfile

This Dockerfile can be used for building a Docker image of Webogram that
launches a container with Node listening on port 8000.

This image uses the official nginx image as its base.

.dockerignore

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+.git

Dockerfile

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+FROM node
+
+ADD . /opt/webogram
+WORKDIR /opt/webogram
+
+RUN npm install
+
+EXPOSE 8000
+
+CMD ["node", "server.js", "8000", "0.0.0.0"]