peertube/client/proxy.config.json

{
  "/api": {
    "target": "http://localhost:9000",
    "secure": false
  },
  "/static": {
    "target": "http://localhost:9000",
    "secure": false
  },
  "/socket.io": {
    "target": "http://localhost:9000",
    "secure": false
  }
}