imageImporter.rb

#sudo sudo apt-get install firefox xvfb
#gem install watir-webdriver
#run with xvfb-run ruby file.rb
require 'watir-webdriver'

browser = Watir::Browser.new
browser.goto 'https://loja.com.br/admin/login/auth'

browser.text_field(:name => "j_username").set "xxx"
browser.text_field(:name => "j_password").set "xxx"

browser.button(:value => "Acesse sua conta!").click

browser.goto 'https://loja.com.br/admin/imageImporter/index'

puts browser.text

browser.file_field(:class,"text").set("/home/ideais/images.zip")

browser.button(:value => "Importar").click

puts browser.text