This is a repository that holds an adapted version of the Flask "Flaskr" demo application for a blog post at: http://www.tricksofthetrades.net/2016/05/18/docker-images-hub/
Here is the resultant image on Docker Hub: https://hub.docker.com/r/5car1z/flaskr-application/
See the original Flaskr examples code repository for more details on the application itself: https://github.com/pallets/flask/tree/master/examples/flaskr