def to_options
      @options.merge(
        environment: environment,
        env_config:  env_config,
        apps_path:   apps_path,
        rackup:      rackup,
        host:        host,
        port:        port
      )
    end
def to_options
      @options.merge(
        environment: environment,
        env_config:  env_config,
        apps_path:   apps_path,
        rackup:      rackup,
        host:        host,
        port:        port
      )
    end
Serialize the most relevant settings into a Hash

 @return [::Hash]

 @since 0.1.0
 @api private