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Maxim Shulga f3804b7e2e Bound daemon startup and shutdown and exit with a useful code

start_daemon and stop_daemon polled "while True" with no bound, and no
seaf-cli exit code was checked. A daemon that failed to start left the
container spinning forever with nothing pointing at the cause, and there was
no signal handling, so "docker stop" waited the full 10 second grace period
and then SIGKILLed the process with the daemon still running.

Readiness polling is now bounded by DAEMON_START_TIMEOUT and
DAEMON_STOP_TIMEOUT. The stop timeout is 8 seconds so a graceful shutdown
fits inside the docker stop grace period, and a test asserts that relation.

SIGTERM and SIGINT raise GracefulShutdown, and the lifecycle moved into
start.run(), which always stops the daemon on the way out and returns the
process exit code: 0 on a clean finish or a stop signal, 1 on a daemon or
configuration failure.

seaf-cli exit codes are checked. A failed sync is reported per library and
does not stop the remaining libraries, since one bad library should not take
the container down.

Verified in the built image: "docker stop" now returns in 0s with exit code 0
and the daemon stopped, against 10s and exit 137 before. A daemon that cannot
start exits 1 with the failing command and its exit code in the log.

Also bumps actions/setup-python to v7, which clears the last Node 20
deprecation warning; v7 only drops the unused pip-install input.

2026-08-02 17:10:20 -07:00

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docker-seafile-client

Docker image for Seafile CLI client.

Image on Docker Hub: snegov/seafile-client.

Docker-compose example:

Also available as a ready-to-use compose.example.yaml.

services:
  seafile-client:
    restart: always
    image: snegov/seafile-client:0.0.13
    environment:
      LIBRARY_ID: "79867cbf-2944-488d-9105-852463ecdf9e:my_library"
      SERVER_HOST: seafile.example.com
      USERNAME: user
      PASSWORD: password
      SEAFILE_UID: 1000
      SEAFILE_GID: 100
    hostname: dsc
    volumes:
      - /home/johndow/seafile:/dsc/seafile
      - sync-data:/dsc/seafile-data
    container_name: seafile-client

volumes:
  sync-data:

Environment variables:

LIBRARY_ID - library to sync, ID or name. Multiple libraries could be separated by colon :.
SERVER_HOST - hostname of your Seafile server, eg: seafile.example.com. If you're using non-standard port, you can specify it here, eg: seafile.example.com:8080.
USERNAME / PASSWORD - credentials to access Seafile server.
SEAFILE_UID / SEAFILE_GID - UID/GID of user inside container. You can use it to set permissions on synced files. Default values are 1000 / 1000.
DELETE_CONFIRM_THRESHOLD - represents the number of files that require confirmation before being deleted simultaneously. Default value is 500.
DISABLE_VERIFY_CERTIFICATE - set to true to disable server's certificate verification. Default value is false.
UPLOAD_LIMIT / DOWNLOAD_LIMIT - upload/download speed limit in B/s (bytes per second). Default values are 0 (unlimited).

Volumes:

/dsc/seafile-data Seafile client data directory (sync status, etc).
/dsc/seafile Seafile libraries content.

Some notes

LIBRARY_ID could be library ID or library name. Library ID is a 36-character string, which is a part of URI when you open library in webUI. Library name is a name you gave to library when you created it.

Libraries will be synced in subdirectories of /dsc/seafile directory inside container. You can mount it to host directory to access files.

The subdirectory is named after the library, with whitespace replaced by underscores. A library is skipped with a warning when its name cannot be a directory of its own: an empty name, ., .., or a name containing /. Two libraries whose names would produce the same directory both get their library ID appended, so they never share one. Everything is created under the libraries directory (/dsc/seafile, or the deprecated /data when that exists); a library name can never place it elsewhere.

The container stops gracefully on docker stop: it shuts the Seafile daemon down and exits with code 0. It exits with a nonzero code and an explanatory message when the daemon fails to start or stop within its timeout, instead of waiting forever.

hostname parameter is optional, but it's recommended to set it to some unique value, it will be shown in Seafile webUI as client name (terminal-dsc in given example).

sync-data volume is optional too, but it's recommended to use it. Otherwise, sync status will be lost when container is recreated.

At the moment there is no suitable way to confirm deletion of large number of files. So, if you're going to delete a lot of files, you should set DELETE_CONFIRM_THRESHOLD to some larger value.

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