diff -r dc349ee44568 -r 385e3a12ee27 src/hdalab/services.py
--- a/src/hdalab/services.py	Tue Mar 13 16:52:47 2018 +0100
+++ b/src/hdalab/services.py	Thu Mar 15 23:52:11 2018 +0100
@@ -23,13 +23,13 @@
 
 @transaction.atomic
 def change_renkan_state(hda_renkan, state, message=None, author=None):
-    
+
     if state != hda_renkan.state:
-        
+
         HdalabRenkanStateTransition.objects.create(renkan=hda_renkan, from_state=hda_renkan.state, to_state=state, message=message, author=author)
         hda_renkan.state = state
         hda_renkan.save()
-        
+
 
 def renkan_capture_preview(hdalab_renkan):
     #get last state date or last modification date
@@ -45,33 +45,33 @@
     rel_export_path_dir = "thumbnails/renkan/%04d/%02d/%02d" % (folder_date.year, folder_date.month, folder_date.day)
     export_path_dir = os.path.join(settings.MEDIA_ROOT,rel_export_path_dir)
     export_filename = "%s.png" % hdalab_renkan.renkan.rk_id
-    
+
     export_path = os.path.join(export_path_dir, export_filename)
     rel_export_path = os.path.join(rel_export_path_dir, export_filename)
-    
+
     if not os.path.exists(export_path_dir):
             try:
                 os.makedirs(export_path_dir)
             except OSError, e:
                 if e.errno != 17:
-                    raise   
+                    raise
                 # time.sleep might help here
                 pass
-            
+
     preview_dim = getattr(settings, 'RENKAN_PREVIEW_DIM', (500,500))
     preview_wait = getattr(settings, 'RENKAN_PREVIEW_WAIT', 5000)
 
     preview_args = [
         getattr(settings,'RENKAN_PREVIEW_PHANTOMJS_PATH','phantomjs'),
         os.path.join(os.path.dirname(os.path.abspath(__file__)),'scripts/capture-phantomjs.js'),
-        "%s%shdalab%s?rk_id=%s" % (settings.WEB_URL, settings.BASE_URL, reverse('renkan_full'),hdalab_renkan.renkan.rk_id),
+        "%s%s%s?rk_id=%s" % (getattr(settings, 'FRONT_WEB_URL', settings.WEB_URL), settings.BASE_URL, reverse('renkan_full'),hdalab_renkan.renkan.rk_id),
         export_path,
         "--width=%d" % preview_dim[0],
         "--height=%d" % preview_dim[1],
         "--wait=%d" % preview_wait
     ]
     check_call(preview_args)
-    
+
     hdalab_renkan.renkan.image = rel_export_path
     hdalab_renkan.renkan.save()