How to run create react app not on root url?

Question

React

Hello!
I have a site running on the root URL through a proxy on node.js.
And my admin panel is on another URL "/manager" and is made on CRA.
The problem is that on such a URL, the non-build version does not start at all, I already tried to specify "homepage" but something does not work.

{
  "homepage": "/manager"
  "name": "manager",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@material-ui/core": "^4.3.1",
    "@material-ui/icons": "^4.2.1",
    "apollo-boost": "^0.4.3",
    "graphql": "^14.4.2",
    "react": "^16.8.6",
    "react-apollo": "^2.5.8",
    "react-dom": "^16.8.6",
    "react-scripts": "3.0.1",
    "react-swipeable-views": "^0.13.3",
    "recompose": "^0.30.0"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}

Answer 1

Apparently you haven't read the documentation .