How to docker pull image

I apologize for this simple question but I cannot find the answer. How can I pull the images found on https://dcar.dsop.io? I'm able to see the API link with all the URLs but I'm not sure which one to pull. I've tried pulling the image key's URL value but no luck. For example, I've tried: docker pull https://dcar.dsop.io/report-artifact/dsop-pipeline-artifacts/container-scan-reports/redhat/redis/redis/4.0.14/2019-11-08T020254.682_1661/redis-4.0.14.tar I get an error.

If someone could point me to documentation that would be great too! Thank you!