Update build_docker.yml

Author: crypto-titan

.github/workflows/build_docker.yml

@@ -24,3 +24,8 @@ jobs:
         with:
           push: true
           tags: emurgornd/wordpress:latest,emurgornd/wordpress:${{ github.ref_name }}
+          file: "./src/docker/Dockerfile"
+          platforms: linux/amd64,linux/arm64
+          build-args: |
+            phpVersion=8.4
+