Deploy Angular Application

I'm trying to deploy angular but I'm having problems in the production environment (kinghost or github pages)

Locally (ng serves --proxy-config proxy.config.json) I use proxy.config.json which redirects my api routes, but the production environment does not see this file since I get ng build --prod .

"/api_app/*": {
    "target": "URL DA API",
    "secure": false,
    "logLevel": "debug"
  },

• How do I configure GitHub Pages with this setting?
• How?
• If not, how can I configure this in KingHost in any way? If you have no other recommendation?

Deploy link on github pages: link