Bower can be configured using JSON in a .bowerrc file. For example:
{
  "directory": "app/components/",
  "analytics": false,
  "timeout": 120000,
  "registry": {
    "search": [
      "http://localhost:8000",
      "https://bower.herokuapp.com"
    ]
  }
}
Placement & Order
The config is obtained by merging multiple configurations by this order of importance:
CLI arguments via --config
 Environment variables Local .bowerrc located in the current working directory All .bowerrc files upwards