example broken for single instance elastic beanstalk

[againer]

Deploying Dockerrun.aws.json to a single ec2 instance managed by EB does not work. The elastic IP does not connect correctly to the running nginx container.

• the ec2 instance is in a public subnet
• the route table, igw, NAT and security groups are all correct
• I can run a simple http server on the host machine (not in docker) and I can make http requests to the ec2 instance just fine.