Root cause: Docker named volumes are created as root, but the container
ran as the unprivileged 'oxicloud' user (UID 1001). Services like
thumbnail_service, image_transcode, and dedup_service call
create_dir_all under /app/storage during initialization, which fails
with 'Permission denied (os error 13)'.
Changes:
- Add entrypoint.sh that runs as root to chown /app/storage, then
drops privileges via su-exec before executing the application
- Update Dockerfile to install su-exec, copy entrypoint, and use
ENTRYPOINT instead of USER+CMD
- Downgrade id_mapping_service initial write failure from ERROR to WARN
(empty in-memory map is perfectly valid, will persist on next save)
- Improve panic message in main.rs to hint at Docker permission issue
Fixes #<issue>
Christian Dielitz