small update to package.json

package.json

@@ -15,8 +15,12 @@
     "package-es5": "cd dist/netex && cat runtime-es5.js polyfills-es5.js main-es5.js > bundle-es5.js",
     "package-es2015": "cd dist/netex && cat runtime-es2015.js polyfills-es2015.js main-es2015.js > bundle-es2015.js",
     "bundle": "npm run build-prod netex && npm run package-es5 && npm run package-es2015",
-    "build:netex": "python3 prefixCSS.py --stage parse && npm run build-prod netex && node build-netex.js && python3 prefixCSS.py --stage cleanup",
-    "build:netex-dev": "python3 prefixCSS.py --stage parse && npm run build-dev netex && node build-netex.js && python3 prefixCSS.py --stage cleanup"
+    "prefix": "python3 prefixCSS.py --stage parse",
+    "prefix:cleanup": "python3 prefixCSS.py --stage cleanup",
+    "build:netex": "npm run prefix && npm run build-prod netex && node build-netex.js",
+    "build:netex-dev": "npm run prefix && npm run build-dev netex && node build-netex.js",
+    "build:drugstone": "npm run prefix && npm run build-prod netex && node build-netex.js && npm run prefix:cleanup",
+    "build:drugstone-dev": "npm run prefix && npm run build-dev netex && node build-netex.js && npm run prefix:cleanup"
   },
   "private": true,
   "dependencies": {