Update GitHub Actions workflow for ZeroTier Docker build

- Refactored workflow to dynamically fetch latest ZeroTier tag
- Added support for scheduled builds every 6 hours
- Enabled manual workflow dispatch
- Updated Docker build and push actions to latest versions
- Configured multi-tag image publishing strategy

.github/workflows/image-build.yml

@@ -1,28 +1,43 @@
-name: Build and Push Docker Image
+name: Docker Build on ZeroTier
 
 on:
   push:
     branches:
-      - master
+      - master  # 当 master 分支有推送时触发
   schedule:
-    - cron: '0 0 * * *' # 每天的 0 点执行
+    - cron: '0 */6 * * *'  # 每6小时检查一次
+  workflow_dispatch:  # 允许手动触发
 
 jobs:
-  build:
-    runs-on: ubuntu-20.04
-
+  check-and-build:
+    runs-on: ubuntu-latest
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v2
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Get latest Tailscale tag
+        id: get_tag
+        run: |
+          LATEST_TAG=$(curl -s https://api.github.com/repos/zerotier/ZeroTierOne/tags | jq -r '.[0].name')
+          echo "LATEST_TAG=${LATEST_TAG}" >> $GITHUB_ENV
+          echo "latest_tag=${LATEST_TAG}" >> $GITHUB_OUTPUT
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
-      - name: Log in to Docker Hub
-        uses: docker/login-action@v2
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
         with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
 
-      - name: Build and push Docker image
-        run: ./build.sh
+      - name: Build and push tagged version
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: |
+            ${{ secrets.DOCKERHUB_USERNAME }}/zerotier-planet-test:latest
+            ${{ secrets.DOCKERHUB_USERNAME }}/zerotier-planet-test:${{ steps.get_tag.outputs.latest_tag }}
+          build-args: |
+            DERP_VERSION=${{ steps.get_tag.outputs.latest_tag }}