AWS Elastic Beanstalk Python worker image

Example Python worker image for AWS Elastic Beanstalk. For more information on EB worker environments: https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features-managing-env-tiers.html

This image uses gunicorn and Flask to listen to localhost:80, which is where the EB worker daemon sends messages from SQS.