fix flaky recorder: use recorder pid to determine mntns

since the process we spawn is in the same mount namespace as the recorder, we can just use our own pid to determine the namespace and avoid any race

Author: mhils

internal/pkg/cli/recorder/recorder.go

@@ -105,7 +105,7 @@ func (r *Recorder) Run() error {
 			return fmt.Errorf("run command: %w", err)
 		}
 
-		mntns, err = r.FindProcMountNamespace(r.bpfRecorder, pid)
+		mntns, err = r.FindProcMountNamespace(r.bpfRecorder, uint32(os.Getpid()))
 		if err != nil {
 			return fmt.Errorf("finding mntns of PID %d: %w", pid, err)
 		}