angular cli build in prod with dev env settings code example

Example 1: angular build production

ng build --configuration=<env> --output-hashing=all

Example 2: adding prod environment file in angular8

content_copy
      
      {
  "/api": {
    "target": "http://localhost:3000",
    "secure": false,
    "pathRewrite": {
      "^/api": ""
    }
  }
}