Etherpad Lite image for docker

This is a docker image for Etherpad Lite collaborative text editor. The Dockerfile for this image has been inspired by the official Wordpress Dockerfile and johbo's etherpad-lite image.

This image uses a database (mysql or postgres) container for the backend for the pads. It is based on debian jessie instead of the official node docker image, since the latest stable version of etherpad-lite does not support npm 2.

About Etherpad Lite

From the official website:

Etherpad allows you to edit documents collaboratively in real-time, much like a live multi-player editor that runs in your browser. Write articles, press releases, to-do lists, etc. together with your friends, fellow students or colleagues, all working on the same document at the same time.

All instances provide access to all data through a well-documented API and supports import/export to many major data exchange formats. And if the built-in feature set isn't enough for you, there's tons of plugins that allow you to customize your instance to suit your needs.

You don't need to set up a server and install Etherpad in order to use it. Just pick one of publicly available instances that friendly people from everywhere around the world have set up. Alternatively, you can set up your own instance by following our installation guide

Quickstart

First you need a running mysql container, for example:

$ docker network create ep_network
$ docker run -d --network ep_network -e MYSQL_ROOT_PASSWORD=password --name ep_mysql mysql

Finally you can start an instance of Etherpad Lite:

$ docker run -d \
    --network ep_network \
    -e ETHERPAD_DB_HOST=ep_mysql \
    -e ETHERPAD_DB_PASSWORD=password \
    -p 9001:9001 \
    agilob/etherpad-lite

Etherpad will automatically create an etherpad database in the specified mysql server if it does not already exist. You can now access Etherpad Lite from http://localhost:9001/

Environment variables

This image supports the following environment variables:

ETHERPAD_TITLE: Title of the Etherpad Lite instance. Defaults to "Etherpad".
ETHERPAD_PORT: Port of the Etherpad Lite instance. Defaults to 9001.
ETHERPAD_ADMIN_PASSWORD: If set, an admin account is enabled for Etherpad, and the /admin/ interface is accessible via it.
ETHERPAD_ADMIN_USER: If the admin password is set, this defaults to "admin". Otherwise the user can set it to another username.
ETHERPAD_DB_TYPE: Type of databse to use. Defaults to mysql.
ETHERPAD_DB_HOST: Hostname of the database to use. Defaults to mysql.
ETHERPAD_DB_USER: By default Etherpad Lite will attempt to connect as root to the database container.
ETHERPAD_DB_PASSWORD: Password to use, mandatory. If legacy links are used and ETHERPAD_DB_USER is root, then MYSQL_ENV_MYSQL_ROOT_PASSWORD is automatically used.
ETHERPAD_DB_PASSWORD_FILE: MySQL password to use, replace ETHERPAD_DB_PASSWORD when using Docker secrets.
ETHERPAD_DB_NAME: The database to use. Defaults to etherpad. If the database is not available, it will be created when the container is launched (only if the database type is either mysql or postgres, and the user need to have the right to create the database).
ETHERPAD_DB_CHARSET: The charset to use. Defaults to utf8mb4.
ETHERPAD_API_KEY: if file APIKEY.txt is missing, the variable value is used to provision it

The generated settings.json file will be available as a volume under /opt/etherpad-lite/var/.