Docker Compose Cookbook

The Docker Compose Cookbook is a library cookbook that provides custom
resources for use in recipes.

Requirements

• Working Docker installation. You might want to use the excellent docker Cookbook to provision Docker.

Usage

Place a dependency on the docker-compose cookbook in your cookbook's
metadata.rb

depends 'docker_compose', '~> 0.0'

Create a Docker Compose file
for the application you want to provision. A simple Compose file that uses the
official nginx Docker image looks like this:

version: '2'
services:
  web_server:
    image: nginx
    ports:
      - "80:80"

Then, in a recipe:

include_recipe 'docker_compose::installation'

# Provision Compose file
cookbook_file '/etc/docker-compose_nginx.yml' do
  source 'docker-compose_nginx.yml'
  owner 'root'
  group 'root'
  mode 0640
  notifies :up, 'docker_compose_application[nginx]', :delayed
end

# Provision Compose application
docker_compose_application 'nginx' do
  action :up
  compose_files [ '/etc/docker-compose_nginx.yml' ]
end

Attributes

• node['docker_compose']['release'] - The release version of Docker Compose
  to install. Defaults to a sane, current default.

• node['docker_compose']['command_path'] - The path under which the
  docker-compose command should be installed.
  Defaults to /usr/local/bin/docker-compose

Resources Overview

docker_compose_application

The docker_compose_application provisions a Docker application (that usually
consists of several services) using a Docker Compose file.

Example

docker_compose_application 'nginx' do
  action :up
  compose_files [ '/etc/docker-compose_nginx.yml', '/etc/docker-compose_nginx.additional.yml' ]
end

Parameters

• project_name - A string to identify the Docker Compose application.
  Defaults to the resource name.

• compose_files - The list of Compose files that makes up the Docker Compose
  application. The specified file names are passed to the docker-compose
  command in the order in which they appear in the list.

Actions

• :up - Create and start containers.
  Equivalent to calling docker-compose up with the Compose files specified
  using the compose_files parameter.

• :down - Stop and remove containers, networks, images, and volumes.
  Equivalent to calling docker-compose down with the Compose files specified
  using the compose_files parameter.

License & Authors

• Author:: Sebastian Boschert (sebastian@2007.org)