Added Dockerfile which can build an image to test the examples against the development source.

Author: fhasanaj28

docker/Dockerfile

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+FROM python:2.7.11
+MAINTAINER Fiona Hasanaj
+
+# install necessary software
+RUN apt-get -y update && apt-get install -y vim  && apt-get install -y git
+
+COPY run_python.sh /python/run_python.sh
+RUN chmod 755 /python/run_python.sh
+WORKDIR /python
+
+# allow interactive bash inside docker container
+CMD ./run_python.sh $API_KEY $ALT_URL
+
+VOLUME ["/source"]

docker/README.md

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+---
+# Docker Image for Python Examples
+---
+### Summary
+To simplify the running of the Python examples, the Dockerfile will build an image where the examples can be tested against the development source.
+
+### Basic Usage
+Build the docker image, e.g. `docker build -t basistech/python:1.1 .`
+
+Run an example as `docker run -e API_KEY=api-key -v "path-to-local-python-dir:/source" basistech/python:1.1`
+
+To test against a specific source file, add `-e FILENAME=filename` before the `-v`
+
+Also, to test against an alternate url, add `-e ALT_URL=alternate_url` before the `-v`

docker/run_python.sh

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+#!/bin/bash
+
+#Gets called when the user doesn't provide any args
+function HELP {
+    echo -e "\nusage: source_file.py --key API_KEY [--url ALT_URL]"
+    echo "  API_KEY      - Rosette API key (required)"
+    echo "  FILENAME     - Python source file (optional)"
+    echo "  ALT_URL      - Alternate service URL (optional)"
+    echo "Compiles and runs the source file(s) using the published rosette-api"
+    exit 1
+}
+
+#Gets API_KEY, FILENAME and ALT_URL if present
+while getopts ":API_KEY:FILENAME:ALT_URL" arg; do
+    case "${arg}" in
+        API_KEY)
+            API_KEY=${OPTARG}
+            usage
+            ;;
+        ALT_URL)
+            ALT_URL=${OPTARG}
+            usage
+            ;;
+        FILENAME)
+            FILENAME=${OPTARG}
+            usage
+            ;;
+    esac
+done
+
+#Checks if Rosette API key is valid
+function checkAPI {
+    match=$(curl "https://api.rosette.com/rest/v1/ping" -H "user_key: ${API_KEY}" |  grep -o "forbidden")
+    if [ ! -z $match ]; then
+        echo -e "\nInvalid Rosette API Key"
+        exit 1
+    fi  
+}
+
+#Copy the mounted content in /source to current WORKDIR
+cp -r /source/* .
+
+#Run the examples
+if [ ! -z ${API_KEY} ]; then
+    checkAPI
+    #Prerequisite
+    python /python/setup.py install
+    cd examples
+    if [ ! -z ${FILENAME} ]; then
+        if [ ! -z ${ALT_URL} ]; then
+	    python ${FILENAME} --key ${API_KEY} --url ${ALT_URL} 
+	else
+	    python ${FILENAME} --key ${API_KEY} 
+   	fi
+    elif [ ! -z ${ALT_URL} ]; then
+    	find -maxdepth 1  -name '*.py' -print -exec python {} --key ${API_KEY} --url ${ALT_URL} \;
+    else
+	find -maxdepth 1  -name '*.py' -print -exec python {} --key ${API_KEY} \;
+    fi
+else 
+    HELP
+fi