Docker integrity check for containers

• We can list the changed files and directories in a containers file system
• There are 3 events that are listed in the diff
  • A - Add
  • D - Delete
  • C - Change

Demonstration

• Let's run a ubuntu container and perform some changes

docker run --name checkintegriy  -it ubuntu:latest bash
mkdir -p /data/output
echo "modifed this stuff" > /.dockerenv
exit

• Now lets see the diff using the following command

docker diff checkintegriy