`docker events > /tmp/out` should not print control characters to non-terminal STDOUT. This addresses commit 26b4a4920adca614f6be17a96f254f331271faf0 without creating regression described in issue #6509. Signed-off-by: Vojtech Vitek (V-Teq) <vvitek@redhat.com> Upstream-commit: d742c57f534352b6cad596d0c9fe8cf84044e92a Component: engine