Added php 8.1 tag

.github/workflows/build-php-8.1.yml

@@ -30,4 +30,5 @@ jobs:
           platforms: linux/amd64,linux/arm64
           push: true
           tags: |
+            markoshust/magento-php:8.1-fpm
             markoshust/magento-php:8.1-fpm-0