Allow per user based kubelogin lock file

pkg/infrastructure/mutex/mutex.go

@@ -6,7 +6,6 @@ import (
 	"os"
 	"path"
 
-	"github.com/alexflint/go-filemutex"
 	"github.com/google/wire"
 	"github.com/int128/kubelogin/pkg/infrastructure/logger"
 )
@@ -54,7 +53,11 @@ func internalRelease(fm *filemutex.FileMutex, lfn string, log logger.Interface)
 
 // LockFileName get the lock file name from the lock name.
 func LockFileName(name string) string {
-	return path.Join(os.TempDir(), fmt.Sprintf(".kubelogin.%s.lock", name))
+	dirname, err := os.UserHomeDir()
+	if err != nil {
+		dirname = os.TempDir()
+	}
+	return path.Join(dirname, fmt.Sprintf(".kubelogin.%s.lock", name))
 }
 
 // Acquire acquire a lock for the specified name. The context could be used to set a timeout.