Add comprehensive Docker containers management page with filtering, search, bulk actions, and enhanced container control with state verification

tests/backend/test_routes_docker.py

@@ -100,6 +100,35 @@ class TestDockerHostsRoutes:
 class TestDockerContainersRoutes:
     """Tests for Docker containers endpoints."""
 
+    @pytest.mark.asyncio
+    async def test_list_all_containers(self, client: AsyncClient, api_key_header, db_session):
+        """Test listing all containers across all hosts (aggregated endpoint)."""
+        response = await client.get(
+            "/api/docker/containers",
+            headers=api_key_header
+        )
+        
+        assert response.status_code == 200
+        data = response.json()
+        assert "containers" in data
+        assert "total" in data
+        assert "running" in data
+        assert "stopped" in data
+        assert "paused" in data
+        assert "hosts_count" in data
+
+    @pytest.mark.asyncio
+    async def test_list_all_containers_with_filters(self, client: AsyncClient, api_key_header, db_session):
+        """Test listing all containers with query filters."""
+        response = await client.get(
+            "/api/docker/containers?state=running",
+            headers=api_key_header
+        )
+        
+        assert response.status_code == 200
+        data = response.json()
+        assert "containers" in data
+
     @pytest.mark.asyncio
     async def test_list_containers(self, client: AsyncClient, api_key_header, db_session):
         """Test listing containers for a host."""