Added gitea actions for testing

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

@@ -0,0 +1,34 @@
+# .github/workflows/build-server.yml
+name: Build and Push Server Docker Image
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build-server:
+    runs-on: ubuntu-24.04
+
+    steps:
+      # 1. Check out the repo
+      - uses: actions/checkout@v4
+
+      # 2. Log in to your container registry
+      - name: Log in to registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ secrets.REGISTRY_URL }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      # 3. Build & push the server image, using remote cache
+      - name: Build and push server image
+        uses: docker/build-push-action@v4
+        with:
+          context:    VirtualDDNSRouter.Server
+          file:       VirtualDDNSRouter.Server/Dockerfile
+          push:       true
+          tags:       ${{ secrets.REGISTRY_URL }}/${{ github.repository_owner }}/${{ github.event.repository.name }}:latest-server
+          cache-from: type=registry,ref=${{ secrets.REGISTRY_URL }}/${{ github.repository_owner }}/${{ github.event.repository.name }}:buildcache
+          cache-to:   type=registry,ref=${{ secrets.REGISTRY_URL }}/${{ github.repository_owner }}/${{ github.event.repository.name }}:buildcache,mode=max