Refactor Docker setup step to check for existing installation and verify functionality

.gitea/workflows/create-and-push-image.yaml

@@ -16,12 +16,19 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@v4
 
-      - name: Install Docker
+      - name: Setup Docker
         run: |
+          # Check if Docker is already available
+          if ! command -v docker &> /dev/null; then
             sudo apt-get update
             sudo apt-get install -y docker.io
-          sudo systemctl start docker
-          sudo usermod -aG docker $USER
+          fi
+          
+          # Verify Docker is working
+          docker --version
+          
+          # Test Docker access (skip if already working)
+          docker info || echo "Docker daemon accessible via socket"
 
       - name: Build Docker Image
         run: |