change the way finding the just built compose binary

Signed-off-by: Guillaume Lours <705411+glours@users.noreply.github.com>

pkg/e2e/framework.go

@@ -138,8 +138,8 @@ func initializePlugins(t testing.TB, configDir string) {
 		t.Logf("WARNING: docker-compose cli-plugin not found")
 	}
 	buildxPlugin, err := findPluginExecutable(DockerBuildxExecutableName)
-	if os.IsNotExist(err) {
-		t.Logf("WARNING: docker-buildx cli-plugin not found")
+	if err != nil {
+		t.Errorf("WARNING: docker-buildx cli-plugin not found ", err)
 	}
 	if err == nil {
 		CopyFile(t, composePlugin, filepath.Join(configDir, "cli-plugins", DockerComposeExecutableName))
@@ -159,8 +159,11 @@ func dirContents(dir string) []string {
 }
 
 func findExecutable(executableName string) (string, error) {
-	_, filename, _, _ := runtime.Caller(0)
-	root := filepath.Join(filepath.Dir(filename), "..", "..")
+	filename, err := os.Getwd()
+	if err != nil {
+		return "", err
+	}
+	root := filepath.Join(filepath.Dir(filename), "..")
 	buildPath := filepath.Join(root, "bin", "build")
 
 	bin, err := filepath.Abs(filepath.Join(buildPath, executableName))