don't upload picture if youtube video is linked

mastaface.py

@@ -103,9 +103,8 @@ for bridge in config['bridges']:
                 logging.info('New post on https://www.facebook.com/' + bridge['facebook_page'] + ' found')   
             statuses = None
             statuses = []
-            # Upload image if it exists
-            if post['image']:
-                url = post['image']
+            # Upload image if it exists and no youtube video is to be linked
+            if post['image'] and not (type(post['link']) == str and post['link'].find('youtu') != -1):
                 # TO DO
                 # fp = tempfile.TemporaryFile()
                 # fp.write(b'Hello world!')
@@ -113,7 +112,7 @@ for bridge in config['bridges']:
                 # fp.read()
                 # fp.close()
                 # Using curl is necessary, because facebook's secure-image is very restrictive
-                subprocess.run(['curl', url, '--output', 'tmp.jpg',
+                subprocess.run(['curl', post['image'], '--output', 'tmp.jpg',
                                 "-H", 'User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:75.0) Gecko/20100101 Firefox/75.0',
                                 "-H", 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
                                 "-H", 'Accept-Language: de,en-US;q=0.7,en;q=0.3', "--compressed" ,