toomanyrequests error from docker.io when running GitHub action test.yaml

[brooke-hamilton]

Bug information

.github/workflows/test.yaml will sometimes throw a "toomanyrequests" error when pulling container images from docker.io.

Steps to reproduce (required)

Reproducing this error depends on hitting a rate limit with docker.io, which happens when more than 100 pulls are done within six hours.

To reproduce the issue, run the GitHub workflow in .github/workflows/test.yaml, titled "Test Samples (k3d and EKS)".

Observed behavior (required)

In the yaml workflow step named Create k3d cluster, the error below will sometimes appear:

Run k3d cluster create --agents 2 -p "80:80@loadbalancer" --k3s-arg "--disable=traefik@server:*" --k3s-arg "--disable=servicelb@server:*" --registry-create sampleregistry:51351
INFO[0000] portmapping '80:80' targets the loadbalancer: defaulting to [servers:*:proxy agents:*:proxy] 
INFO[0000] Prep: Network                                
INFO[0000] Created network 'k3d-k3s-default'            
INFO[0000] Created image volume k3d-k3s-default-images  
INFO[0000] Creating node 'sampleregistry'               
ERRO[0000] Failed Cluster Preparation: Failed to create registry: failed to create registry node 'sampleregistry': runtime failed to create node 'sampleregistry': failed to create container for node 'sampleregistry': docker failed to pull image 'docker.io/library/registry:2': docker failed to pull the image 'docker.io/library/registry:2': Error response from daemon: toomanyrequests: You have reached your pull rate limit. You may increase the limit by authenticating and upgrading: https://www.docker.com/increase-rate-limit 
ERRO[0000] Failed to create cluster >>> Rolling Back    
INFO[0000] Deleting cluster 'k3s-default'               
ERRO[0000] failed to get cluster: No nodes found for given cluster 
FATA[0000] Cluster creation FAILED, also FAILED to rollback changes! 
Error: Process completed with exit code 1.

This is an example of a failed test run: https://github.com/radius-project/samples/actions/runs/10424759874/job/28876734613

Desired behavior (required)

The workflow should be runnable without hitting a rate limit.

Workaround (optional)

A possible workaround is to configure all the container pulls in the workflow to pull from a different registry.

System information

rad Version (required)

VERSION=0.37.0-rc1

Operating system (required)

GitHub action runner

AB#12993