Handle/monitor Docker Hub rate limiting
https://www.docker.com/increase-rate-limits
On November 20, 2020, rate limits anonymous and free authenticated use of Docker Hub went into effect. Anonymous and Free Docker Hub users are limited to 100 and 200 container image pull requests per six hours. You can read here for more detailed information.
100 pulls per six hours isn't much and I predict we could hit it in the future.
https://docs.docker.com/docker-hub/download-rate-limit/ and https://about.gitlab.com/blog/2020/11/18/docker-hub-rate-limit-monitoring/ contains some information regarding monitoring the limit.
We should set up pull-through caching, see: