@@ -55,11 +55,11 @@ func setupTestV1(t *testing.T) func() {

 	ctrl = &authorizationController{}

 	teardown := setupTest(t)

-	err := os.MkdirAll("/etc/docker/plugins", 0755)

+	err := os.MkdirAll("/etc/docker/plugins", 0o755)

 	assert.NilError(t, err)

 	fileName := fmt.Sprintf("/etc/docker/plugins/%s.spec", testAuthZPlugin)

-	err = os.WriteFile(fileName, []byte(server.URL), 0644)

+	err = os.WriteFile(fileName, []byte(server.URL), 0o644)

 	assert.NilError(t, err)

 	return func() {

@@ -231,7 +231,7 @@ func TestPluginsWithRuntimes(t *testing.T) {

 	exec runc $@

 	`, dir)

-	assert.NilError(t, os.WriteFile(p, []byte(script), 0777))

+	assert.NilError(t, os.WriteFile(p, []byte(script), 0o777))

 	type config struct {

 		Runtimes map[string]types.Runtime `json:"runtimes"`

@@ -244,7 +244,7 @@ func TestPluginsWithRuntimes(t *testing.T) {

 		},

 	})

 	configPath := filepath.Join(dir, "config.json")

-	os.WriteFile(configPath, cfg, 0644)

+	os.WriteFile(configPath, cfg, 0o644)

 	t.Run("No Args", func(t *testing.T) {

 		d.Restart(t, "--default-runtime=myrt", "--config-file="+configPath)

@@ -344,11 +344,11 @@ func setupPlugin(t *testing.T, ec map[string]*graphEventsCounter, ext string, mu

 		respond(w, &graphDriverResponse{Size: size})

 	})

-	err = os.MkdirAll("/etc/docker/plugins", 0755)

+	err = os.MkdirAll("/etc/docker/plugins", 0o755)

 	assert.NilError(t, err)

 	specFile := "/etc/docker/plugins/" + name + "." + ext

-	err = os.WriteFile(specFile, b, 0644)

+	err = os.WriteFile(specFile, b, 0o644)

 	assert.NilError(t, err)

 }

@@ -8,9 +8,7 @@ import (

 	"github.com/docker/docker/testutil/environment"

 )

-var (

-	testEnv *environment.Execution

-)

+var testEnv *environment.Execution

 func TestMain(m *testing.M) {

 	var err error

@@ -27,7 +27,7 @@ func main() {

 			return

 		}

-		f, err := os.OpenFile(startReq.File, os.O_RDONLY, 0600)

+		f, err := os.OpenFile(startReq.File, os.O_RDONLY, 0o600)

 		if err != nil {

 			http.Error(w, err.Error(), http.StatusInternalServerError)

 			return

@@ -37,7 +37,7 @@ func handle(mux *http.ServeMux) {

 			return

 		}

-		f, err := os.OpenFile(req.File, syscall.O_RDONLY, 0700)

+		f, err := os.OpenFile(req.File, syscall.O_RDONLY, 0o700)

 		if err != nil {

 			respond(err, w)

 		}

@@ -8,9 +8,7 @@ import (

 	"github.com/docker/docker/testutil/environment"

 )

-var (

-	testEnv *environment.Execution

-)

+var testEnv *environment.Execution

 func TestMain(m *testing.M) {

 	var err error

@@ -8,9 +8,7 @@ import (

 	"github.com/docker/docker/testutil/environment"

 )

-var (

-	testEnv *environment.Execution

-)

+var testEnv *environment.Execution

 func TestMain(m *testing.M) {

 	var err error