用法
Usage: docker diff [OPTIONS] CONTAINER
Inspect changes on a container's filesystem
--help=false Print usage
例子
$ sudo docker diff b448f729a0b0 C /run A /run/secrets
总结
diff会列出3种容器内文件状态变化(A - Add, D - Delete, C - Change )的列表清单。构建Image的过程中需要的调试指令。