chore(build): add docker image build workflow

.gitea/workflows/docker.yml

@@ -0,0 +1,39 @@
+name: docker-release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '1.25.5'
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Yandex Cloud Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: cr.yandex
+          username: oauth
+          password: ${{ secrets.YANDEX_CLOUD_OAUTH_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: |
+            cr.yandex/${{ secrets.YANDEX_CLOUD_REGISTRY_ID }}/trackers:${{ github.ref_name }}
+            cr.yandex/${{ secrets.YANDEX_CLOUD_REGISTRY_ID }}/trackers:latest
+          platforms: linux/amd64