Multiple Build Dir's and load specific Build Dir by request domain

[felipeduardo]

Hi,

I try to run multiple build's and it's work.

my build
yarn concurrently "SITE=site1 next build" "SITE=site2 next build"

my next.config.js

const nextConfig = {
  env: {
    ENVIRONMENT: process.env.ENVIRONMENT
  },
  distDir: `build/${process.env.SITE}/.next/`,
  ...

Now, I need change dir in run time by request domain, because site1 and site2 respond to the same server

const SITE = 'site1'; // I need this value dinamic by request domain
const dir = './build/${site}';
const dev = process.env.DEV_SERVER === 'true';
const app = next({dev, dir});

I try this, but don't work...

const customServer = () => {
  const server = express();

  const setDirectory = () => {
    return (req, res, next) => {
      const SITE = converHostBySite(req.get('host'));
      express.static(`build/${SITE}`);
    };
  };

  server.use(setDirectory());

  return server;
};