The Docker client stores content trust-related files under the .docker/trust directory, inside the user's home directory.
If we navigate to the trusted directory, we will find different registry files under .docker/trust/tuf. We used Docker Hub in this chapter's examples. Therefore, we will find the docker.io registry and different repositories. This may vary in your environment; you may have more registries or repositories. It will depend on when you started to use Docker Content Trust in your Docker host. Using the examples from the previous sections, we will find a tree-like directory structure under the .docker directory:
trust/tuf/docker.io/frjaraur/mybusybox/metadata:
total 16
-rw------- 1 zero zero 494 nov 30 17:29 timestamp.json
-rw------- 1 zero zero 531 nov 30 17:28 targets.json
-rw------- 1 zero zero 682 nov 30 17:28 snapshot.json
-rw------- 1 zero zero 2417 nov 30 17:03 root.json
...
...
trust/tuf/docker.io/library/busybox/metadata:
total 28
-rw---...