capistrano-docker-rails-sample

Rails sample app for demonstrating capistrano-docker integration

Summary

This is an example Rails 4.0.0 project to show how https://github.com/juwalter/capistrano-docker works. The fun stuff is in https://github.com/juwalter/capistrano-docker-rails-sample/blob/master/config/deploy.rb#L14 and https://github.com/juwalter/capistrano-docker-rails-sample/tree/master/config/deploy/cap_docker_rails_example

The configuration and control.sh assumes http://nginx.org/ as your web server. The included Dockerfile configures an image with nginx and rvm and ruby 2.0.

Zero downtime deploys leverage nginx' reverse-proxy feature with multiple upstream servers, see https://github.com/juwalter/capistrano-docker-rails-sample/blob/master/config/deploy/cap_docker_rails_example/host_nginx/sites-enabled/cap-docker-rails-example.conf#L1

Prerequisites

Have http://www.docker.io/gettingstarted/#h_installation and nginx installed and working on your server

Quick start

git clone git@github.com:juwalter/capistrano-docker-rails-sample.git
cd capistrano-docker-rails-sample
rvm use 2.0@capistrano-docker-rails-sample --rvmrc --create
bundle
(optional) adjust files at config/deploy/cap_docker_rails_example
cap docker:prepare (read the info at the end carefully; you need to prepare the Dockerfile with deploy keys and such)
before the next steps, make sure you have a docker repository for this app on your server
cap deploy:setup
cap deploy:migrations

Contribute

• Fork
• Create a topic branch - git checkout -b my_branch
• Rebase your branch so that all your changes are reflected in one commit
• Push to your branch - git push origin my_branch
• Create a Pull Request from your branch, include as much documentation as you can in the commit message/pull request, following these guidelines on writing a good commit message
• Thanks :)