解决方法
截至今日
the Docker registry在索引中公布了这一点.例如,参见
Ubuntu base image tags,其显示每个标签和每个层的文件系统内容.通过API：
$curl https://index.docker.io/v1/repositories/ubuntu/tags
[{"layer": "9cd978db300e27386baa9dd791bf6dc818f13e52235b26e95703361ec3c94dc6","name": "latest"},{"layer": "9cc9ea5ea540116b89e41898dd30858107c1175260fb7ff50322b34704092232","name": "10.04"},...
