fix(ci): Missing Alpine in step

Author: leocavalcante

.github/workflows/docker.yml

@@ -61,5 +61,7 @@ jobs:
         with:
           context: .
           push: true
-          build-args: PHP=${{ matrix.php }}
+          build-args: |
+            ALPINE=${{ matrix.alpine }}
+            PHP=${{ matrix.php }}
           tags: opencodeco/phpctl:php${{ matrix.php }}