This post is older than a year. Consider some information might not be accurate anymore.
Having chat rooms for specific topics or projects have become quite popular. IMHO it is a nice addon for development and deployment lifecycle management. HipChat or Slack are some popular providers. If you want to have an internal chat system, letschat is a quick way to accomplish that. It has some flaws, debugging LDAP was a horror, but basically is good enough in its vanilla state. Take as it is and its free (MIT License). We use it currently for receiving notifications from our continuous integration system.
Persistent data
letschat uses as data storage MongoDB. Start MongoDB as a docker container with a data volume for persistent storage.
docker run --name chat-mongo -v /var/opt/mongodb/data:/data/db -d mongo:latest
MongoDB is not clustered or high available. This is a simple setup.
Docker Customizations
Upload directory
mkdir -p /var/opt/letschat/uploads
Config directory
mkdir -p /opt/letschat/config
Place the content of this settings.yml in the created directory.
env: production
http:
enable: true
host: 'localhost'
port: 5000
files:
enable: true
provider: local
local:
dir: uploads
xmpp:
enable: false
port: 5222
domain: example.com
database:
uri: mongodb://localhost/letschat
secrets:
cookie: secretsauce
auth:
providers: [local]
Start Letschat
We map the volumes and link with the MongoDB container, so letschat can use it for data persistence.
docker run \
--name letschat \
--link chat-mongo:mongo \
-p 8091:8080 -p 5222:5222 \
-v /opt/letschat/config:/usr/src/app/config \
-v /var/opt/letschat/uploads:/usr/src/app/uploads \
--restart=always \
-d sdelements/lets-chat
