docker-cli/docs/reference/commandline/diff.md

diff

Usage: docker diff CONTAINER

Inspect changes on a container's filesystem

List the changed files and directories in a container᾿s filesystem There are 3 events that are listed in the diff:

1. A - Add
2. D - Delete
3. C - Change

For example:

$ docker diff 7bb0e258aefe

C /dev
A /dev/kmsg
C /etc
A /etc/mtab
A /go
A /go/src
A /go/src/github.com
A /go/src/github.com/docker
A /go/src/github.com/docker/docker
A /go/src/github.com/docker/docker/.git
....