```ruby
require "optparse"
require "dockerfiroonga/platform"

module Dockerfiroonga
  class Command
    USAGE = <<-END_OF_USAGE
Usage: dockerfiroonga PLATFORM [Xroonga]
  PLATFORM:
    * debian:sid (.tar.gz)
    * ubuntu (PPA)
    * centos (yum)
  Xroonga:
    * groonga (default)
    * rroonga
    END_OF_USAGE

    def self.run(arguments)
      new(arguments).run
    end

    def initialize(arguments)
      parser = OptionParser.new(USAGE.each_line.first)
      parser.on("-h", "--help", "Show usage") do |boolean|
        $stdout.puts(USAGE)
        exit(true)
      end
      parser.parse!(arguments)

      if arguments.empty?
        $stdout.puts(USAGE)
        exit(true)
      end
      @platform_name = arguments[0]
      @platform = Platform.new(@platform_name)
      @_roonga = arguments[1] || "groonga"
      unless @platform.respond_to?("installation_#{@_roonga}")
        raise ArgumentError, "Not supported yet: <#{@_roonga}>"
      end
    end

    def run
      puts <<-END_OF_FILE
FROM #{@platform_name}
MAINTAINER Masafumi Yokoyama <yokoyama@clear-code.com>
#{@platform.__send__("installation_#{@_roonga}")}
CMD ["groonga", "--version"]
      END_OF_FILE
    end
  end
end
```

Support -v and --version option
user
```ruby
require "optparse"
require "dockerfiroonga/platform"
require "dockerfiroonga/version"

module Dockerfiroonga
  class Command
    USAGE = <<-END_OF_USAGE
Usage: dockerfiroonga PLATFORM [Xroonga]
  PLATFORM:
    * debian:sid (.tar.gz)
    * ubuntu (PPA)
    * centos (yum)
  Xroonga:
    * groonga (default)
    * rroonga
    END_OF_USAGE

    def self.run(arguments)
      new(arguments).run
    end

    def initialize(arguments)
      parser = OptionParser.new(USAGE.each_line.first)
      parser.version = VERSION
      parser.on("-h", "--help", "Show usage") do |boolean|
        $stdout.puts(USAGE)
        exit(true)
      end
      parser.parse!(arguments)

      if arguments.empty?
        $stdout.puts(USAGE)
        exit(true)
      end
      @platform_name = arguments[0]
      @platform = Platform.new(@platform_name)
      @_roonga = arguments[1] || "groonga"
      unless @platform.respond_to?("installation_#{@_roonga}")
        raise ArgumentError, "Not supported yet: <#{@_roonga}>"
      end
    end

    def run
      puts <<-END_OF_FILE
FROM #{@platform_name}
MAINTAINER Masafumi Yokoyama <yokoyama@clear-code.com>
#{@platform.__send__("installation_#{@_roonga}")}
CMD ["groonga", "--version"]
      END_OF_FILE
    end
  end
end
```
assistant