fix docker lint test script for travis-ci

Author: prasmalla

package.json

@@ -5,7 +5,7 @@
     "build": "webpack --mode production",
     "dev": "webpack --mode development --watch",
     "test": "jest --verbose --coverage --watchAll",
-    "lint": "eslint --ext .js --ext .jsx src"
+    "docker-test-lint": "eslint --ext .js --ext .jsx src"
   },
   "keywords": [
     "react",