Added a Dockerfile for repeatable runtimes

Builds docker image with  TA-Lib, Jupyter, and checked out version of zipline and
starts Jupyter server on port https://localhost:8888 when container runs.  The
default password for the Jupyter server is 'jupyter'.

Instructions on usage found in the Dockerfile comments.  Example image at
docker.io/jxstanford/zipline.

.dockerignore

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+MANIFEST.in
+**/*pyc
+.eggs
+dist
+build
+*.egg-info

Dockerfile

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+#
+# Dockerfile for an image with the currently checked out version of zipline installed. To build:
+#
+#    docker build -t quantopian/zipline .
+# 
+# To run the container:
+#
+#    docker run -v=/path/to/your/notebooks:/projects -p 8888:8888/tcp --name zipline -it quantopian/zipline
+#
+# To access Jupyter when running docker locally (you may need to add NAT rules):
+#
+#    https://127.0.0.1
+#
+# default password is jupyter.  to provide another, see:
+#    http://jupyter-notebook.readthedocs.org/en/latest/public_server.html#preparing-a-hashed-password
+# 
+# once generated, you can pass the new value via `docker run --env` the first time
+# you start the container.
+# 
+# You can also run an algo using the docker exec command.  For example:
+#
+#    docker exec -it zipline run_algo.py -f /projects/my_algo.py --start 2015-1-1 --end 2016-1-1 \
+#         --symbols XOP -o /projects/result.pickle
+#
+# For developers who want to access source inside the zipline container, try running this from 
+# within the root of the zipline source tree:
+# 
+#    docker run -v=/path/to/your/notebooks:/projects -v=`pwd`:/zipline -p 443:8888/tcp \
+#         --name zipline -it quantopian/zipline
+# 
+
+FROM python:2.7
+
+#
+# set up environment
+# 
+ENV PROJECT_DIR=/projects \
+    NOTEBOOK_PORT=8888 \
+    SSL_CERT_PEM=/root/.jupyter/jupyter.pem \
+    SSL_CERT_KEY=/root/.jupyter/jupyter.key \
+    PW_HASH="u'sha1:31cb67870a35:1a2321318481f00b0efdf3d1f71af523d3ffc505'" \
+    CONFIG_PATH=/root/.jupyter/jupyter_notebook_config.py
+
+# 
+# install TA-Lib and other prerequisites
+# 
+
+RUN mkdir ${PROJECT_DIR} \
+    && apt-get -y update \
+    && apt-get -y install libfreetype6-dev libpng-dev libopenblas-dev liblapack-dev gfortran \
+    && curl -L http://downloads.sourceforge.net/project/ta-lib/ta-lib/0.4.0/ta-lib-0.4.0-src.tar.gz | tar xvz 
+
+#
+# build and install zipline from source.  install TA-Lib after to ensure
+# numpy is available.
+# 
+
+WORKDIR /ta-lib
+
+RUN pip install numpy==1.9.2 \
+  && pip install scipy==0.15.1 \
+  && pip install pandas==0.16.1 \
+  && ./configure --prefix=/usr \
+  && make \
+  && make install \
+  && pip install TA-Lib \
+  && pip install jupyter
+
+#
+# This is then only file we need from source to remain in the
+# image after build and install.
+#
+
+ADD ./etc/docker_cmd.sh /
+
+# 
+# make port available. /zipline is made a volume
+# for developer testing.
+# 
+EXPOSE ${NOTEBOOK_PORT}
+
+#
+# build and install the zipline package into the image
+#
+
+ADD . /zipline
+WORKDIR /zipline
+RUN python setup.py install
+
+#
+# clean up the build artifacts and recreate the folder for 
+# developer mount
+#
+
+RUN rm -rf /zipline && mkdir /zipline
+
+#
+# start the jupyter server
+#
+
+WORKDIR ${PROJECT_DIR}
+CMD /docker_cmd.sh

etc/docker_cmd.sh

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+#!/bin/bash
+
+# 
+# generate configuration, cert, and password if this is the first run
+# 
+if [ ! -f /var/tmp/zipline_init ] ; then
+    jupyter notebook --generate-config
+    if [ ! -f ${SSL_CERT_PEM} ] ; then
+        openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
+            -subj "/C=US/ST=Denial/L=Springfield/O=Dis/CN=127.0.0.1" \
+            -keyout ${SSL_CERT_KEY} -out ${SSL_CERT_PEM}
+    fi
+    echo "c.NotebookApp.password = ${PW_HASH}" >> ${CONFIG_PATH}
+    touch /var/tmp/zipline_init
+fi 
+
+jupyter notebook -y --no-browser --notebook-dir=${PROJECT_DIR} \
+    --certfile=${SSL_CERT_PEM} --keyfile=${SSL_CERT_KEY} --ip='*' \
+    --config=${CONFIG_PATH}