application_controller.rb

class ApplicationController < ActionController::Base
  include CanvasOauth::CanvasApplication
  
  # ...
end

canvas.yml

default: &default
  key: your_developer_key
  secret: your_developer_secret

development:
  <<: *default

test:
  <<: *default

production:
  <<: *default

Gemfile

# ...

gem 'canvas_oauth_engine', :require => 'canvas_oauth'

# ...

routes.rb

# ...

mount CanvasOauth::Engine => "/canvas_oauth"

# ...

run.sh

bundle install
bundle exec rake railties:install:migrations
bundle exec rake db:migrate