Create daphne service and restart it in capistrano

config/deploy/apps/api/production.rb

@@ -35,4 +35,15 @@
             execute :sudo, 'systemctl restart gunicorn'
         end
     end
+end
+
+after 'gunicorn:restart', 'gunicorn:websocket'
+
+namespace :gunicorn do
+    desc 'Launch asgi server for websocket'
+    task :websocket do
+        on roles(:web) do |h|
+            execute :sudo, 'systemctl restart daphne.service'
+        end
+    end
 end