Update container.js

Fixed #4863

Author: mjalav

lib/container.js

@@ -469,7 +469,7 @@ function loadGherkinSteps(paths) {
       loadSupportObject(path, `Step Definition from ${path}`)
     }
   } else {
-    const folderPath = paths.startsWith('.') ? path.join(global.codecept_dir, paths) : ''
+    const folderPath = paths.startsWith('.') ? normalizeAndJoin(global.codecept_dir, paths) : ''
     if (folderPath !== '') {
       globSync(folderPath).forEach(file => {
         loadSupportObject(file, `Step Definition from ${file}`)
@@ -562,3 +562,16 @@ function getHelperModuleName(helperName, config) {
   // built-in helpers
   return `./helper/${helperName}`
 }
+
+function normalizeAndJoin(basePath, subPath) {
+  // Normalize the path (handles extra slashes and resolves `..`)
+  let normalizedBase = path.normalize(basePath);
+  let normalizedSub = path.normalize(subPath);
+
+  // Replace backslashes with forward slashes
+  normalizedBase = normalizedBase.replace(/\\/g, '/');
+  normalizedSub = normalizedSub.replace(/\\/g, '/');
+
+  // Join the paths using POSIX-style
+  return path.posix.join(normalizedBase, normalizedSub);
+}