Add serve command

justfile

@@ -13,3 +13,7 @@ tests:
     @{{php}} rm -rf var/cache
     @{{php}} vendor/bin/phpunit
 
+# Run the local Symfony preview app at http://localhost:8000
+serve:
+    @docker compose run --rm php sh -c "rm -rf dev/var/cache && php -S 0.0.0.0:8000 -t dev/public"
+