talk/docs/_docs/01-02-install-docker.md

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Installation From Docker	/docs/install/docker/

We currently support packaging the Talk application via Docker, which automates the dependency install and asset build process. This is the recommended way to deploy the application when used in production.

Available as coralproject/talk on Docker Hub.

Images are tagged using the following notation:

• x (where x is the major version number): any minor or patch updates will be included in this. If you're ok getting new features occasionally and all the bug fixes, this is the tag for you.
• x.y (where y is the minor version number): any patch updates will be included with this tag. If you like getting fixes and having features change only when you want, this is the tag for you. (recommended)
• x.y.z (where z is the patch version): this tag never gets updated, and essentially freezes your version, this should only be used when you are either extending Talk or are sure of a specific version you want to freeze.

We provide tags with *-onbuild that can be used for easy plugin integration and acts as a customization endpoint. Instructions are provided in the PLUGINS.md document as to how to use it.

Requirements

There are some runtime requirements for running Talk for Docker:

• Docker v1.13.0 or later
• Docker Compose v1.10.0 or later

Please be sure to check the versions of these requirements. Incorrect versions of these may lead to unexpected errors!

Installing

An example docker-compose.yml:

version: '2'
services:
  talk:
    image: coralproject/talk:latest
    restart: always
    ports:
      - "5000:5000"
    depends_on:
      - mongo
      - redis
    environment:
      - TALK_MONGO_URL=mongodb://mongo/talk
      - TALK_REDIS_URL=redis://redis
  mongo:
    image: mongo:3.2
    restart: always
    volumes:
      - mongo:/data/db
  redis:
    image: redis:3.2
    restart: always
    volumes:
      - redis:/data
volumes:
  mongo:
    external: false
  redis:
    external: false

At this stage, you should refer to the README.md for configuration variables that are specific to your installation. Some pre-defined fields have been filled in the above example which are consistent with Docker Compose naming conventions for Docker Links.

Scaling

If you are interested in splitting apart services, you can simply adjust the command being executed in the container to optimize for your use case. An example would be if you wanted to run the API server and the job processor on different machines. You can achieve this easily with docker compose:

version: '2'
services:
  talk-api:
    image: coralproject/talk:latest
    command: cli serve
    restart: always
    ports:
      - "5000:5000"
    depends_on:
      - mongo
      - redis
    environment:
      - TALK_MONGO_URL=mongodb://mongo/talk
      - TALK_REDIS_URL=redis://redis
  talk-jobs:
    image: coralproject/talk:latest
    command: cli jobs process
    restart: always
    ports:
      - "5001:5000"
    depends_on:
      - mongo
      - redis
    environment:
      - TALK_MONGO_URL=mongodb://mongo/talk
      - TALK_REDIS_URL=redis://redis
  mongo:
    image: mongo:3.2
    restart: always
    volumes:
      - mongo:/data/db
  redis:
    image: redis:3.2
    restart: always
    volumes:
      - redis:/data
volumes:
  mongo:
    external: false
  redis:
    external: false

Note that the only difference is in the command key. From this, you are able to discretely control which modules are running in order to have the maximum flexibility when managing your application.

Running

If you're using docker compose:

# Start the services using compose
docker-compose up -d

If you're using plain docker:

docker run -d -P coralproject/talk:latest