ci: add Docker Hub login and push to workflow

Author: 夏一飞

.github/workflows/docker-publish.yml

@@ -9,6 +9,8 @@ on:
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
+  DOCKERHUB_REGISTRY: docker.io
+  DOCKERHUB_IMAGE_NAME: your_dockerhub_username/your_image_name
 
 jobs:
   build:
@@ -39,13 +41,23 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      # 登录到 Docker Hub
+      - name: Log into Docker Hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.DOCKERHUB_REGISTRY }}
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
       # 提取 Docker 元数据
       - name: Extract Docker metadata
         id: meta
         uses: docker/metadata-action@v5
         with:
           images: |
             ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+            ${{ env.DOCKERHUB_REGISTRY }}/${{ env.DOCKERHUB_IMAGE_NAME }}
           tags: |
             type=ref,event=branch
             type=ref,event=pr
@@ -54,7 +66,7 @@ jobs:
             type=sha
             type=raw,value=latest,enable={{is_default_branch}}
 
-      # 构建并推送到 GHCR
+      # 构建并推送到 GHCR 和 Docker Hub
       - name: Build and push Docker image
         uses: docker/build-push-action@v5
         with: