# Kvitt backup job image (SPEC §10.3, §10.9): alpine with sqlite, gzip, tar, rclone and backup.sh run by crond.
# Versions resolved 2026-10-17: alpine 3.24.2 (Docker Hub official image, multi-arch index digest below);
# packages from Alpine v3.24 main/community: sqlite 3.53.4, rclone 1.74.1, tar 1.35, tzdata 2026e.
FROM docker.io/library/alpine:3.24.2@sha256:294b683cb724975bec92580e1e685676bd4b50bda910ddb8c51d4cabeaec77e6

RUN apk add --no-cache \
      "sqlite~3.53" \
      "rclone~1.74" \
      "tar~1.35" \
      gzip \
      tzdata

COPY backup.sh /backup.sh
RUN chmod 0755 /backup.sh \
 && echo '30 3 * * * /backup.sh' > /etc/crontabs/root

ENV TZ=Europe/Stockholm
# Daily at 03:30 Europe/Stockholm. The development stack runs it on demand instead
# (`docker compose run --rm backup /backup.sh`, see infra/README.md).
CMD ["crond", "-f", "-l", "8"]