使用浏览器访问：https://rancher-mirror.rancher.cn/rancher/v2.13.1/rancher-images.txt 可正常列出镜像列表。
使用curl访问出现异常：
curl https://rancher-mirror.rancher.cn/rancher/v2.13.1/rancher-images.txt
Warning: Binary output can mess up your terminal. Use “–output -” to tell
Warning: curl to output it to your terminal anyway, or consider “–output
Warning: ” to save to a file.