feat: add CI workflow to build and push plugin-server image on release (#3632)

.github/workflows/build-and-push-plugin-server-image.yml

@@ -0,0 +1,106 @@
+name: Build Plugin Server Image and Push
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+  workflow_dispatch:
+    inputs:
+      plugin_server_ref:
+        description: "plugin-server repo ref (branch/tag/commit, default: main)"
+        required: false
+        default: "main"
+        type: string
+      version:
+        description: "Version tag (optional, without leading v)"
+        required: false
+        type: string
+
+jobs:
+  build-plugin-server-image:
+    runs-on: ubuntu-latest
+    environment:
+      name: image-registry-plugin-server
+    env:
+      IMAGE_REGISTRY: ${{ vars.IMAGE_REGISTRY || 'higress-registry.cn-hangzhou.cr.aliyuncs.com' }}
+      IMAGE_NAME: ${{ vars.PLUGIN_SERVER_IMAGE_NAME || 'higress/plugin-server' }}
+    steps:
+      - name: "Clone plugin-server repository"
+        uses: actions/checkout@v4
+        with:
+          repository: higress-group/plugin-server
+          ref: ${{ github.event.inputs.plugin_server_ref || 'main' }}
+          path: plugin-server
+          fetch-depth: 1
+
+      - name: Free Up GitHub Actions Ubuntu Runner Disk Space
+        uses: jlumbroso/free-disk-space@main
+        with:
+          tool-cache: false
+          android: true
+          dotnet: true
+          haskell: true
+          large-packages: true
+          swap-storage: true
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+        with:
+          image: tonistiigi/binfmt:qemu-v7.0.0
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Cache Docker layers
+        uses: actions/cache@v4
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-plugin-server-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-plugin-server-
+
+      - name: Determine version
+        id: version
+        run: |
+          if [[ "${{ github.event_name }}" == "workflow_dispatch" && -n "${{ github.event.inputs.version }}" ]]; then
+            echo "manual_version=${{ github.event.inputs.version }}" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Calculate Docker metadata
+        id: docker-meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=sha
+            type=ref,event=tag
+            type=semver,pattern={{version}}
+            type=raw,value=${{ steps.version.outputs.manual_version }},enable=${{ steps.version.outputs.manual_version != '' }}
+            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/') }}
+
+      - name: Login to Docker Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.IMAGE_REGISTRY }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Build Docker Image and Push
+        run: |
+          BUILT_IMAGE=""
+          readarray -t IMAGES <<< "${{ steps.docker-meta.outputs.tags }}"
+          for image in "${IMAGES[@]}"; do
+            echo "Image: $image"
+            if [ "$BUILT_IMAGE" == "" ]; then
+              docker buildx build \
+                  --platform linux/amd64,linux/arm64 \
+                  -t "$image" \
+                  -f plugin-server/Dockerfile \
+                  --push \
+                  plugin-server
+              BUILT_IMAGE="$image"
+            else
+              docker buildx imagetools create "$BUILT_IMAGE" --tag "$image"
+            fi
+          done