Correct metadata-action tags which use default branch as latest

Author: jimyhuang

.github/workflows/docker-publish.yml

@@ -2,7 +2,7 @@ name: Create and publish a Docker image
 
 on:
   push:
-    branches: ['bullseye','buster','master']
+    branches: ['bullseye','buster']
   workflow_dispatch:
 
 jobs:
@@ -36,7 +36,12 @@ jobs:
           images: |
             ${{ github.repository }}
             ghcr.io/${{ github.repository }}
-
+          tags: |
+            type=schedule
+            type=ref,event=branch
+            type=ref,event=tag
+            type=ref,event=pr
+            type=raw,value=latest,enable={{is_default_branch}}
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v3