provide Dockerfile used for building

Dockerfile

+# Use for building and deploying Kwant website
+
+FROM ubuntu:14.04
+MAINTAINER Kwant authors <authors@kwant-project.org>
+
+RUN apt-get update -y && apt-get install -y python3-pip git libjpeg-dev zlib1g-dev libxml2-dev libxslt1-dev
+RUN pip3 install nikola jinja2 webassets