Fix CSI node bind mount and publish to correct image registry.

Use k8s mount-utils for bind mounts so the pod target directory is created
before mounting, and push CI images to ghcr.io/kubelancloud/kks-csi-plugin
to match the deployed chart.

Co-authored-by: Cursor <cursoragent@cursor.com>

pkg/csi/driver/mount_linux_test.go

@@ -0,0 +1,48 @@
+//go:build linux
+
+package driver
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestBindMountCreatesTargetAndIsIdempotent(t *testing.T) {
+	t.Parallel()
+
+	root := t.TempDir()
+	source := filepath.Join(root, "globalmount")
+	target := filepath.Join(root, "pods", "test", "mount")
+	if err := os.MkdirAll(source, 0o755); err != nil {
+		t.Fatalf("mkdir source: %v", err)
+	}
+	if err := os.WriteFile(filepath.Join(source, "probe"), []byte("ok"), 0o644); err != nil {
+		t.Fatalf("write probe file: %v", err)
+	}
+
+	mounter := newMounter()
+	if err := mounter.Mount("tmpfs", source, "tmpfs", []string{}); err != nil {
+		t.Fatalf("mount tmpfs at source: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = cleanupMountPoint(source, mounter)
+	})
+
+	if err := bindMount(source, target); err != nil {
+		t.Fatalf("first bindMount failed: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = cleanupMountPoint(target, mounter)
+	})
+
+	if _, err := os.Stat(target); err != nil {
+		t.Fatalf("target mount path missing: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(target, "probe")); err != nil {
+		t.Fatalf("bind mount did not expose source contents: %v", err)
+	}
+	if err := bindMount(source, target); err != nil {
+		t.Fatalf("second bindMount failed: %v", err)
+	}
+}