ember-cli-fastboot-dotenv

ember-cli-dotenv-like addon for Ember.js for FastBoot which allows to use environment variables passed to FastBoot server in runtime.

Use .env file for development and production defaults.

See Ohne Zeit as an example from which the following info is extracted from.

// .env
COUCH_URL=http://127.0.0.1:5984
DATABASE_NAME=ohne-zeit
CHANGES_FEED=event-source

Set allowed keys in ember-cli-build:

const EmberApp = require('ember-cli/lib/broccoli/ember-app');
module.exports = function(defaults) {
  let app = new EmberApp(defaults, {
    'ember-cli-fastboot-dotenv': {
      keys: [ 'COUCH_URL', 'DATABASE_NAME', 'CHANGES_FEED' ]
    }
  });
  return app.toTree();
};

Build your app without .env or keep it for defaults.

$ ember build -prod
$ cd dist
$ npm install

Override .env defaults with environment variables when running in FastBoot:

// fastboot-server.js
const app = express();
app.get('/*', fastboot('./dist'));
app.listen(3000);

$ COUCH_URL=http://server:5984 ./fastboot-server.js

Configuration lookup in the app (FastBoot and Browser)

// app/instance-initializers/store.js
export default {
  name: 'app:store',
  after: 'ember-cli-fastboot-dotenv',
  initialize(app) {
    let dotenv = app.lookup('service:dotenv');
    let {
      couchURL,
      databaseName,
      changesFeed
    } = dotenv.getProperties('couchURL', 'databaseName', 'changesFeed');
    // ...
  }
};