Add Docker registry test workflow

.gitea/workflows/test-docker.yml

@@ -0,0 +1,35 @@
+name: Test Docker Registry
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  test-docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      
+      - name: Create test Dockerfile
+        run: |
+          cat > Dockerfile << DOCKER_EOF
+FROM alpine:latest
+RUN echo "SilverLabs Test Image"
+CMD ["echo", "Hello from SilverLabs Infrastructure!"]
+DOCKER_EOF
+          
+      - name: Build Docker image
+        run: docker build -t test-image:latest .
+      
+      - name: Tag image for registry
+        run: docker tag test-image:latest 10.0.0.245:5000/test-image:latest
+      
+      - name: Login to Docker Registry
+        run: echo "RegistryPass2025" | docker login 10.0.0.245:5000 -u admin --password-stdin
+      
+      - name: Push to Docker Registry
+        run: docker push 10.0.0.245:5000/test-image:latest
+      
+      - name: Verify image in registry
+        run: curl -u admin:RegistryPass2025 http://10.0.0.245:5000/v2/test-image/tags/list