This Docker image daily backups whole Tumblr blog. It keeps past versions available as well using rdiff-backup.

It is configured through an environment variable:

• TUMBLR_BLOG_NAME – name of the Tumblr blog to backup

You should make sure you mount backup volume (/tumblr-backup-history) so that backup is preserved when container is recreated. This volume contains the latest backup together with rdiff-backup data for previous versions. /tumblr-backup volume contains only the latest backup.