docker-volume-backup
A lightweight companion Docker container that backs up Docker volumes on a schedule or on demand to local storage or to S3, WebDAV, Azure Blob, Dropbox, Google Drive, or SSH destinations.
docker-volume-backup is a small companion container, under 25 MB, that runs alongside an existing Docker setup to back up the volumes it is given. It performs recurring or one-off backups to a local directory or to any combination of S3, WebDAV, Azure Blob Storage, Dropbox, Google Drive, or SSH-compatible storage, and rotates away old backups according to configured retention.
Backups can be encrypted with GPG, and the tool can send notifications when a backup run fails. It is configured through a compose service definition or run directly with Docker, either for recurring scheduled backups or one-time runs from the command line.