Bundler is installed before executing
bundle install, in case a Gemfile.lock is present. The specific version defined in the Gemfile.lock under
BUNDLED WITH is installed and used to run the
bundle install command.
The issues fixed include the error messages printed during build:
rbenv: bundle: command not found
You must use Bundler 2 or greater with this lockfile.
Updated Bitrise Docs URL printed if Apple Developer Portal connection is not set up.