1.0: curl & vim
1.1: curl & vim and CMD (a default command to run when the container is run)
1.2: curl& vim and ENTRYPOTINT (a default EXEC command which can accept runtime parameters)
1.3: curl & vim & create a volume /www/website
Run this image and create a test_volume.txt file and this file should not persist between restarts of container. Volumes and data are not stored in containers.