add gitea workflow

.gitea/workflows/docker-build-push.yml

@@ -0,0 +1,30 @@
+name: Docker Build and Push
+
+  on:
+    push:
+      tags:
+        - "v*"
+
+  jobs:
+    docker:
+      runs-on: ubuntu-latest
+
+      steps:
+        - name: Checkout
+          uses: actions/checkout@v4
+
+        - name: Login to Docker Registry
+          run: |
+            echo "${{ secrets.DOCKER_PASSWORD }}" | docker login "${{ secrets.DOCKER_REGISTRY }}" \
+              -u "${{ secrets.DOCKER_USERNAME }}" \
+              --password-stdin
+
+        - name: Build Docker Image
+          run: |
+            docker build \
+              -t "${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_IMAGE }}:${{ gitea.ref_name }}" \
+              .
+
+        - name: Push Docker Image
+          run: |
+            docker push "${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_IMAGE }}:${{ gitea.ref_name }}"