[Rails 4.x] Rails アプリをWerckerを通してHerokuに上げる際に -bash: heroku: command not found とかなった場合の対応。 ref: http://qiita.com/tsumekoara/items/62cfa777b108acb5659f

file0.txt

$ heroku run:detached rake db:migrate --app $APP_NAME
-bash: heroku: command not found

file1.txt

deploy:
    steps:
        - heroku-deploy:
            install-toolbelt: true #ここ！
        - script:
            name: Migrate DB
            code: heroku run rake db:migrate --app $APP_NAME
        - script:
            name: Update assets
            code: heroku run rake add_static_assets --app $APP_NAME