gistfile1.sh

#!/bin/bash

id=$(docker run -d ubuntu:14.04 bash -c "mkdir -p /x && touch /x/a")
docker wait $id
sleep 1
docker commit $id myimg
docker run myimg ls -l /x --time-style=full-iso
id=$(docker run -d myimg bash -c "rm -rf /x && mkdir /x && touch /x/a")
docker wait $id
sleep 1
docker commit $id myimg2
docker run myimg2 ls -l /x --time-style=full-iso
id=$(docker run -d myimg2 bash -c "rm -rf /x && mkdir /x")
docker wait $id
sleep 1
docker commit $id myimg3
docker run myimg3 ls -l /x --time-style=full-iso