Casper, a French author wrote an interesting blog about the above topic. He wrote it in French, in a easy to read style. It is posted on the Planet Fedora site.
If you do not know French, you can use google translate to good advantage. Copy the URL to Google translate, select French, and your desired output language.
Persistence des données (Persistance of data)
Posted by Casper (Fedora Account System Usernamefantom) on January 08, 2017 11:39 AM
He discusses docker and his unfortunate experiences with it. As he wrote, fortunately he had daily backups.
More at http://fedoraplanet.org/