feat(kube): kube app auto update backend (#5547)

api/filesystem/write.go

@@ -0,0 +1,23 @@
+package filesystem
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/pkg/errors"
+)
+
+func WriteToFile(dst string, content []byte) error {
+	if err := os.MkdirAll(filepath.Dir(dst), 0744); err != nil {
+		return errors.Wrapf(err, "failed to create filestructure for the path %q", dst)
+	}
+
+	file, err := os.Create(dst)
+	if err != nil {
+		return errors.Wrapf(err, "failed to open a file %q", dst)
+	}
+	defer file.Close()
+
+	_, err = file.Write(content)
+	return errors.Wrapf(err, "failed to write a file %q", dst)
+}