refactor: refactoring of code to meet all go lint requirements

pkg/local/local.go

@@ -116,7 +116,12 @@ func copyFile(src, dst string) error {
 	if err != nil {
 		return err
 	}
-	defer in.Close()
+	defer func(in *os.File) {
+		err := in.Close()
+		if err != nil {
+			return
+		}
+	}(in)
 
 	out, err := os.Create(dst)
 	if err != nil {
@@ -125,7 +130,10 @@ func copyFile(src, dst string) error {
 
 	_, err = io.Copy(out, in)
 	if err != nil {
-		out.Close()
+		err := out.Close()
+		if err != nil {
+			return err
+		}
 		return err
 	}
 	return out.Close()

pkg/local/local_test.go

@@ -45,7 +45,12 @@ func createFile(fileName, content string) ([]byte, error) {
 		fmt.Println("Error creating file:", err)
 		return nil, err
 	}
-	defer file.Close()
+	defer func(file *os.File) {
+		err := file.Close()
+		if err != nil {
+			return
+		}
+	}(file)
 
 	// Write the message to the file
 	_, err = file.WriteString(content)