chg: tag images with -panthera

update.py

@@ -17,7 +17,7 @@ def build_images():
     for image in images:
         path = Path('../images').joinpath(image)
 
-        call(['docker', 'build', '--no-cache', f'--tag={image}:{today}', '.'],
+        call(['docker', 'build', '--no-cache', f'--tag={image}-panthera:{today}', '.'],
                cwd=path)