Find it on Docker Hub.
This is a dead simple blue/green application tester built with Flask.
It's meant to be used by Kubernetes, and uses the app_color environment variable to set the application color.
Please see k8s/ for examples.
Also usable on a standalone docker host by passing the environment variable from the docker command
docker run -d --restart=always -p 5000:5000 -e app_color=blue --name blue alexfeig/bluegreen
or
docker run -d --restart=always -p 5000:5000 -e app_color=green --name green alexfeig/bluegreen
