You might encounter an error while pulling a large Docker image:
ERROR: toomanyrequests: Too Many Requests.
You have reached your pull rate limit. You may increase the limit by authenticating and upgrading: https://www.docker.com/increase-rate-limits.
On November 20, 2020, Docker Hub puts rate limits on anonymous and free authenticated pull requests. The rate limits for anonymous and authenticated pulls are 100 per 6 hours and 200 per 6 hours, respectively. Anonymous users have limits enforced via IP. Since all computing nodes at OSC share the same IP, anonymous pull rate limit is shared by all OSC users if you are not authenticated.
If you encounter this error and want to get rid of it, please consider setting up authenticated access to Docker Hub: https://sylabs.io/guides/3.7/user-guide/endpoint.html#sec-managing-oci-r....