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.