anchor.diff:  $ cf push my_app -b https://github.com/cloudfoundry/r-buildpack.git
   </pre>
   
  -## <a name='supported_versions'></a> Supported Versions
  +## <a id="supported_versions"></a> Supported Versions
   
   You can find the list of supported R versions in the 
   [R buildpack release notes](https://github.com/cloudfoundry/r-buildpack/releases).
   
   
  -## <a name='start_command'></a>Start Command ###
  +## <a id="start_command"></a>Start Command ###
   
   The R buildpack does not generate a default start command for your applications. Instead, you must specify a start command for your app.
   
  
positive.code: 
  For more information about using buildpacks in disconnected environments, see [Disconnected environments](https://github.com/cf-buildpacks/buildpack-packager/blob/master/doc/disconnected_environments.md).
  
  ## <a name='proxy_support'></a> Proxy Support
  
  If you need to use a proxy to download dependencies during staging, you can set
  the `http_proxy` and `https_proxy` environment variables. For more information, see [Using a Proxy](../proxy-usage.html).
  
  
  ## <a name='bosh_trusted_cert'></a> BOSH Configured Custom Trusted Certificate Support
  
  R uses certificates stored in `/etc/ssl/certs`. Your platform operator can configure the platform to add the custom certificates into the application container. For more information, see [Configuring Trusted System Certificates for Applications](../../devguide/deploy-apps/trusted-system-certificates.html).
  
  
  ## <a name='help_support'></a> Help and Support
  
  Join the **#buildpacks** channel in our [Slack community](http://slack.cloudfoundry.org/) if you need any further assistance.
  
  
negative.code:       - name: jsonlite
  ```
  
  ## <a id="vendoring"></a> Vendoring App Dependencies
  
  If you are deploying in an environment that is disconnected from the Internet, you must _vendor_ your app's dependencies, which means you must make these packages available for offline use. You can vendor dependencies by using a package manager. 
  
  