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Heroku supports Rack and Rack-based web frameworks like Sinatra, Ramaze, and Camping. To run a Rack-based app, include a Gemfile, as well as a rackup file named config.ru in the app’s root directory. The config.ru file convention has become common, so most existing Rack applications should not require changes to deploy to Heroku. Pure Rack apps First, create a new directory and write a simple conf
Bundler is the default gem dependency manager for Ruby projects. Bundler is the way to manage your gems on Heroku. Almost any gem - even those with native dependencies - can be installed using Bundler. If there’s a specific gem that won’t install on Heroku, please submit a support ticket. Using Bundler To use, install bundler: $ gem install bundler Create a file named Gemfile in the root of your a
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