test: replace os.MkdirTemp with t.TempDir()

Use t.TempDir() which automatically cleans up the temporary directory
when the test completes, eliminating the need for manual cleanup.

Go 1.14 modernization pattern.

Assisted-By: cagent
Signed-off-by: David Gageot <david.gageot@docker.com>

cmd/compose/options_test.go

@@ -213,10 +213,7 @@ func TestDisplayInterpolationVariables(t *testing.T) {
 	ctrl := gomock.NewController(t)
 	defer ctrl.Finish()
 
-	// Create a temporary directory for the test
-	tmpDir, err := os.MkdirTemp("", "compose-test")
-	require.NoError(t, err)
-	defer func() { _ = os.RemoveAll(tmpDir) }()
+	tmpDir := t.TempDir()
 
 	// Create a temporary compose file
 	composeContent := `
@@ -230,8 +227,7 @@ services:
       - UNSET_VAR                       # optional without default
 `
 	composePath := filepath.Join(tmpDir, "docker-compose.yml")
-	err = os.WriteFile(composePath, []byte(composeContent), 0o644)
-	require.NoError(t, err)
+	require.NoError(t, os.WriteFile(composePath, []byte(composeContent), 0o644))
 
 	buf := new(bytes.Buffer)
 	cli := mocks.NewMockCli(ctrl)

pkg/e2e/volumes_test.go

@@ -19,7 +19,6 @@ package e2e
 import (
 	"fmt"
 	"net/http"
-	"os"
 	"path/filepath"
 	"runtime"
 	"strings"
@@ -104,9 +103,7 @@ func TestProjectVolumeBind(t *testing.T) {
 		if runtime.GOOS == "windows" {
 			t.Skip("Running on Windows. Skipping...")
 		}
-		tmpDir, err := os.MkdirTemp("", projectName)
-		assert.NilError(t, err)
-		defer os.RemoveAll(tmpDir) //nolint
+		tmpDir := t.TempDir()
 
 		c.RunDockerComposeCmd(t, "--project-name", projectName, "down")