Docker Hub enforces pull rate limits on all images stored on Docker Hub. You can learn more about this in Docker’s documentation.
When you encounter this on CloudBees CodeShip Pro you will see errors in your build logs like:
ERROR: toomanyrequests: Too Many Requests.
Or
You have reached your pull rate limit. You may increase the limit by authenticating and upgrading: https://www.docker.com/increase-rate-limits. You must authenticate your pull requests.
If you anticipate higher usage than what the free Docker plan offers, then you may need to configure Docker Hub authentication and consider upgrading your Docker plan to allow unlimited pulls.
We encourage you to enable caching on your CloudBees CodeShip Pro projects. This allows you to have faster builds and will reduce the total number of Docker Hub pulls by using our internal caching system.