feat: add indexer build action

.github/workflows/indexer.yml

@@ -0,0 +1,53 @@
+name: DockerBuild
+
+on:
+  push:
+    # branches: [main]
+    tags:
+      - indexer-v*
+  # pull_request:
+  #   branches: [main]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    permissions:
+      contents: read
+      packages: write
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Setup variables
+        id: vars
+        run: |
+          TAG="${GITHUB_REF##*/}"
+          echo "::set-output name=tag::${TAG%%/*}"
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v4
+        with:
+          context: ./indexer
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.vars.outputs.tag }}
+          labels: ${{ steps.meta.outputs.labels }}