Capistrano::Dockerized

Add tasks for capistrano to deploy with docker compose.

Add this line to your Gemfile

gem 'capistrano-dockerized'

And then execute:

$ bundle

Or install it yourself as:

$ gem install capistrano-dockerized

Add this line to your Capfile:

require 'capistrano/dockerized

You can specify the following options in you deploy.rb script or the environment specific deploy file:

• dockerized_restart: An array of services that should be restarted each deployment, if not specified dockerized will restart all services
• dockerized_web_service: The web service that will be used to execute commands inside like rake or any interactive command from dockerized:run, default value: :web
• dockerized_rake_tasks: A set of rake tasks to execute after each deploy, default value is nil

For a typical rails application the previous options should be as follows, given that the application container service name is web:

set :dockerized_restart, [:web]
set :dockerized_web_service, :web
set :dockerized_rake_tasks, ['db:migrate', 'assets:precompile']

dockerized:build                # build docker-compose services
dockerized:clean                # delete docker images that are not related to current build
dockerized:down                 # shutdown all project services with docker-compose
dockerized:rake_tasks           # execute a set of rake tasts inside the web container
dockerized:restart              # restart services of docker-compose and if not services listed restart all services
dockerized:run                  # run an interactive command inside the web container
dockerized:up                   # boot up all docker-compose services

You would need to setup your database by invoking the db:setup task to create and seed your database:

• cap production dockerized:run rake db:setup

• This gem doesn't provide a dockerfile nor docker-compose.yml file, you have to create these files yourself
• The linked directories and files will not work and you should use docker data volumes anyway