修復require zip錯誤

ad_banner.gemspec

@@ -4,6 +4,21 @@ $:.push File.expand_path("../lib", __FILE__)
 require "ad_banner/version"
 bundle_update_flag = ARGV[0]=='update' || ARGV[0]=='install'
 if bundle_update_flag
+    env_pwd = ENV['PWD']
+      begin
+        require ::File.expand_path('app/helpers/bundler_helper.rb',  env_pwd)
+        extend BundlerHelper
+      rescue LoadError
+        def bundler_with_clean_env(&block)
+          if block_given?
+            if Bundler.respond_to?(:with_unbundled_env)
+              Bundler.with_unbundled_env(&block)
+            else
+              Bundler.with_clean_env(&block)
+            end
+          end
+        end
+      end
     require "fileutils"
     app_path = File.expand_path(__dir__)
     template_path = ENV['PWD'] + '/app/templates'
@@ -40,7 +55,11 @@ if bundle_update_flag
             end
             save_zip_name = "#{ENV['PWD']}/tmp/ffmpeg-4.2-linux-64.zip"
             IO.copy_stream(download, save_zip_name)
-            require 'zip'
+            begin
+                require 'zip'
+            rescue LoadError
+                bundler_with_clean_env{system("gem install zip-zip")}
+            end
             FileUtils.mkdir_p(destination)
             Zip::File.open(save_zip_name) do |zip_file|
                 zip_file.each do |f|