Seafile in Docker with Memcached

This is a docker image made for running seafile in a container using sqlite with a built-in memcached server. Supervisord is used in order to start memcached, seafile and seahub automatically.

As seafile is automatically configured using docker build arguments, this should be either built locally, or reconfigured using a volume, as described below.

A python script is used to download the latest version of seafile, so unless they make breaking changes to the seafile configuration or the download page, this should always work fine. I will try to keep this updated, but pull requests are always welcome.

Pull:

docker pull redprog/seafile

Prerequisites

For the following to work, you need to spin up a temporary seafile instance. It's not necessary to configure volumes for this.

Pull requests are more than welcome if you find a better way of solving this issue, as it does not seem very "docker-like" to me.

Copy seahub.db [Important]

For this step it's important, that /opt/seafile/seahub.db is not mounted on the host. If this step is skipped, seahub will create a new default library each time the container is restarted, as well as show the welcome message once you log in.

Run the following command replacing the dummy ID with the temporary setup container ID, and the path to point to the place where you want to store the database on your host:

sudo docker cp 123456789abc:/opt/seafile/seahub.db ./seafile

Copy config files to host and add a volume [Optional]

If you want to add custom configurations to seafile, you need to copy the existing seafile configuration from the temporary container to your host and add a volume to your docker configuration.

Just run the following script replacing the dummy ID with the temporary setup container ID, and the path to point to the place where you want to store the configuration files on your host:

ID=123456789abc
PATH=./seafile/conf

/usr/bin/docker cp $ID:/opt/seafile/conf/ccnet.conf $PATH
/usr/bin/docker cp $ID:/opt/seafile/conf/gunicorn.conf $PATH
/usr/bin/docker cp $ID:/opt/seafile/conf/seafdav.conf $PATH
/usr/bin/docker cp $ID:/opt/seafile/conf/seafile.conf $PATH
/usr/bin/docker cp $ID:/opt/seafile/conf/seahub_settings.py $PATH
/usr/bin/docker cp $ID:/opt/seafile/conf/seahub_settings.pyc $PATH

Afterwards, add a volume to your docker configuration to mount the config path on your host to /opt/seafile/conf in the container. Example:

...
services:
  seafile:
    ...
    volumes:
      ...
      - ./seafile/conf:/opt/seafile/conf
    ...

Volumes

Container path	Description
/opt/seafile/seafile-data	Data stored by the seafile server (e.g. libraries, uploaded files).
/opt/seafile/seahub-data	Data stored by the seahub server (e.g. thumbnails, avatars).
/opt/seafile/seahub.db	SQLite database of the seahub server. Contains library metadata, etc.
/var/log	Log files of memcached, seafile and seahub are stored here.
/opt/seafile/conf	Configuration files are here. Read this section (Optional)

Logs

Three log files are created in /var/logs in the container, memcached.log, seafile.log and seahub.log. Refer to those files in case you experience trouble to investigate the issue.

docker-compose.yml

A seafile container can be run easily using docker-compose. Refer to the example config below:

version: "3"

services:
  seafile:
    image: redprog/seafile
    volumes:
      - ./seafile/seafile-data:/opt/seafile/seafile-data
      - ./seafile/seahub-data:/opt/seafile/seahub-data
      - ./seafile/seahub.db:/opt/seafile/seahub.db
      - ./seafile/logs:/var/log
    restart: always
    networks:
      - web

Supervisor

All processes are managed using Supervisor. To manage them, you can execute a new bash session in the container and run supervisorctl [stop|start|restart] [memcached|seafile|seahub].

This however should in theory not be necessary under normal circumstances and only described here for the sake of completeness.