Beginning November 2, Docker started phasing in limits of Docker container pull requests for anonymous and free authenticated users on Docker Hub. Eventually anonymous pulls will be restricted to 100 pulls every six hours. This can lead to unexpected downtimes of your applications once the limit is exhausted.
Please make sure to use authenticated pulls and configure pull secrets for images hosted on Docker Hub or alternatively pull images from a different registry. You can find more information on our blog and in the APPUiO User Documentation.
If you need support with these changes, we are pleased to help you. Please contact us under firstname.lastname@example.org or via the ticket system.