initial creation
install: start named server via supervisord
start named as root
install: configured named to be started manually via supervisord
init: populate default configuration if it does not exist
expose dns port
create mountpoint /app/data
setup /app/data directory at application startup
build: apply upstart fix from https://github.com/dotcloud/docker/issues/1024
added unzip to essential packages list
expose port 10000
update apt cache