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Issue description

First two guided exercises from chapter 3 relies on container images being pushed into each students' quay.io registry. Unfortunately, as we are pushing container images from the same IP address (same cloud provider IP address), Quay.io blocks us to continue the either log in or to push containers raising an HTTP Error 429. 

Steps to reproduce:

Have at least 5 students simultaneously trying to log in/push container images to quay.io

Workaround:

No workaround possible

Expected result:

Everyone can upload their container images