copiar arquivos do GCS

gistfile1.txt

storage = Google::Cloud::Storage.new(
  project_id: ENV['GOOGLE_STORAGE_BUCKET'],
  credentials: JSON.parse(ENV['GOOGLE_CREDENTIALS_FILE']),
  timeout: 1_000_000
)
bucket = storage.bucket ENV['BUCKET']
files = bucket.files prefix: ENV['INTERVAL']

files.each do |file|
  downloaded = file.download
  File.open("local-dir/#{file.name}", 'w:ASCII-8BIT') do |f|
    f.puts(downloaded.read)
  end  
end