# Tiny rclone + sqlite sidecar that backs up /data to Backblaze B2 on a loop.
FROM alpine:3.20

RUN apk add --no-cache rclone sqlite tzdata

COPY backup.sh /backup.sh
RUN chmod +x /backup.sh

ENV BACKUP_INTERVAL=86400

# Run once on boot, then every BACKUP_INTERVAL seconds. A failed run is logged
# but does not kill the loop.
CMD ["sh", "-c", "while true; do /backup.sh || echo '[backup] FAILED'; sleep \"${BACKUP_INTERVAL}\"; done"]