title: How to bundle install gemfile with specific version of bundler
body: <p>I am trying to bundle install a project running <code>gem 'rails', '4.2.0'</code>.
  Running <code>Bundle install</code>, I get :</p>
  
  <pre><code>Bundler could not find compatible versions for gem "bundler":
    In Gemfile:
      rails (= 4.2.0) was resolved to 4.2.0, which depends on
        bundler (&gt;= 1.3.0, &lt; 2.0)
  
    Current Bundler version:
      bundler (2.1.4)
  This Gemfile requires a different version of Bundler.
  Perhaps you need to update Bundler by running `gem install bundler`?
  
  Could not find gem 'bundler (&gt;= 1.3.0, &lt; 2.0)', which is required by gem 'rails (= 4.2.0)', in any of the sources.
  </code></pre>
  
  <p>Thus I then try to install bundler v 1.3.0 to successfully bundle this gemfile : <code>gem install bundler -v 1.3.0</code></p>
  
  <pre><code>gem list bundler shows me that I successfully installed bundler at v 1.3.0
  </code></pre>
  
  <p>Then when trying to bundle install with v 1.3.0 like this <code>bundle _1.3.0_ install</code>, I get <code>Could not find command "_1.3.0_".</code></p>
  
  <p>How can I successfully run bundle install with that specific version of bundler ?</p>