Stage environment setup in angular

angular.json

"configurations": {
  "production": { ... },
  "staging": {
    "fileReplacements": [
      {
        "replace": "src/environments/environment.ts",
        "with": "src/environments/environment.staging.ts"
      }
    ]
  }
}
  
  
  // ng build --configuration=staging
  
  
"serve": {
  "builder": "@angular-devkit/build-angular:dev-server",
  "options": {
    "browserTarget": "your-project-name:build"
  },
  "configurations": {
    "production": {
      "browserTarget": "your-project-name:build:production"
    },
    "staging": {
      "browserTarget": "your-project-name:build:staging"
    }
  }
},


  // ng serve --configuration=staging


// Referance URL: https://angular.io/guide/build#using-environment-specific-variables-in-your-app



architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist/test",
            "assets": [
              "src/favicon.ico",
              "src/assets",
              "src/lib",
              "src/zoom",
              "src/lib/av/"
            ],