Merge pull request #174 from qwlong/master

Add support for alibaba cloud linux

Author: unixmonkey

bin/wkhtmltopdf

@@ -55,7 +55,8 @@ suffix = case RbConfig::CONFIG['host_os']
 
            os = 'centos_8' if os.start_with?('rocky_8') ||
                               os.start_with?('rhel_8.') ||
-                              os.start_with?('ol_8.')
+                              os.start_with?('ol_8.') ||
+                              os.start_with?('alinux_')
 
            os_based_on_debian_9 = os.start_with?('debian_9') ||
                                   os.start_with?('deepin')