Deflake TestBindOverlay in //test/e2e:integration_test

Test failure happens when `echo` writes late:
* Server nc shuts down write when it sees EOF from stdin.
* Client nc closes the connection when it detects EOF from socket and no data
  in internal write buffer.

Using `-q` flag to make server not shutting down write in the beginning, while
letting connection to be closed by client. As `-q` flag's default value varies
in different netcat versions, we always specify it to prevent future breakage.

PiperOrigin-RevId: 349504016

1 files changed, 1 insertions, 1 deletions

diff --git a/test/e2e/regression_test.go b/test/e2e/regression_test.go
index 70bbe5121..84564cdaa 100644
--- a/test/e2e/regression_test.go
+++ b/test/e2e/regression_test.go
@@ -35,7 +35,7 @@ func TestBindOverlay(t *testing.T) {
 	// Run the container.
 	got, err := d.Run(ctx, dockerutil.RunOpts{
 		Image: "basic/ubuntu",
-	}, "bash", "-c", "nc -l -U /var/run/sock & p=$! && sleep 1 && echo foobar-asdf | nc -U /var/run/sock && wait $p")
+	}, "bash", "-c", "nc -q -1 -l -U /var/run/sock & p=$! && sleep 1 && echo foobar-asdf | nc -q 0 -U /var/run/sock && wait $p")
 	if err != nil {
 		t.Fatalf("docker run failed: %v", err)
 	}