Adding ability to create stand-alone docker instance

Dockerfile

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+# This file describes how to build slack-pokemon into a runnable linux container with
+# all dependencies installed.
+
+# Set the base image to Ubuntu
+FROM        ubuntu
+
+# Update
+run apt-get -y update
+
+# Install node and npm
+###run apt-get -y install nodejs npm
+run apt-get -y install nodejs-legacy npm
+
+
+### Currently going to use supervisord to run everything in a single container
+# Also install redis locally
+run apt-get -y install redis-server
+run apt-get -y install supervisor
+
+add ./supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+
+# Define working directory
+WORKDIR /src
+# Copy current directory into container
+ADD . /src
+
+# Get node_modules
+run npm install
+
+# Expose slack-pokemon's port (no need to expose redis)
+EXPOSE 5000
+
+# Start supervisor
+cmd ["supervisord", "-n"]

supervisord.conf

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+[supervisord]
+nodaemon=true
+
+[program:redis]
+user=redis
+command=/usr/bin/redis-server
+stdout_logfile=/var/log/supervisor/%(program_name)s.log
+stderr_logfile=/var/log/supervisor/%(program_name)s.log
+autorestart=true
+
+[program:slack-pokemon]
+command=npm start
+stdout_logfile=/var/log/supervisor/%(program_name)s.log
+stderr_logfile=/var/log/supervisor/%(program_name)s.log
+autorestart=true