Installing packages with a Gemfile on Elastic Beanstalk
To use RubyGems to install packages that your application requires, include a Gemfile file in the root of your project source.
Example Gemfile
source "https://rubygems.org"
gem 'sinatra'
gem 'json'
gem 'rack-parser'When a Gemfile file is present, Elastic Beanstalk runs bundle install to install dependencies. For more information, see the
Gemfiles and Bundle pages on the
Bundler.io website.
Note
You can use a different version of Puma besides the default that's pre-installed with the Ruby platform. To do so, include an entry in a
Gemfile that specifies the version. You can also specify a different application server, such as Passenger, by using a
customized Gemfile.
For both of these cases you're required to configure a Procfile to start the
application server.
For more information see Configuring the application process with a Procfile .
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