Update slim.js

Author: sergeyk

lib/slim.js

@@ -3,7 +3,12 @@ const glob = require('glob-all');
 const fse = require('fs-extra');
 
 const getStripMode = options => {
-  if (options.slim === false || options.slim === 'false') {
+  if (
+    options.strip === false ||
+    options.strip === 'false' ||
+    options.slim === false ||
+    options.slim === 'false'
+  ) {
     return 'skip';
   } else if (options.dockerizePip) {
     return 'docker';