Detail the location of docker pull image file

1. Store in /var/lib/Docker

2. repositories-aufs:

{
  "Repositories":
  {
  "hello-world":{"latest":"7a5a2d73abce5e0eab6aa3fa06f5d08308c79efed1e6f0392b298c322c0f955b"},
  "tensorflow/tensorflow":{"latest":"05a46e5af4d377866454047abf232a2f3489a5d01cebe33a6d63e2540781b77c"}
  }
}

Note: Two mirrors were pulled from the docker mirror warehouse

docker pull hello-world docker pull tensorflow/tensorflow

3. / var/lib/docker/graph/this folder:

json - holds metadata about the image (the JSON file contains the warehouse name, tag, and the image for the tag ID) One integer representing the size of layersize. The layer/ wok subfolder holds the mirror image of the rootfs container