ng-serve-angular-6-and-higher.json

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "my-sample-project": {
      "architect": {
        "serve": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "my-sample-project:build",
            "port": 5003,
            "host": "example.com"
          }
        }
      }
    }
  }
}