NodeJS Subdomain w/ vhost and greenlock-express - node.js

Question

I'm new to Node and I want my website, dacio.app, working with subdomains for my college projects using vhost.
However, I need to have it secured due to the requirement for .app domains, so I'm using greenlock-express to automate it.
Don't be frontin', yo! TLS SNI 'giphy.dacio.app' does not match 'Host:
potatoes.dacio.app'
I've tried using the vhost example in the repo, but it doesn't look like server-static supports express apps.
Any tips on how to get this working? I keep hearing about reverse proxies, but I'm not sure if it's worth the effort as I don't even know if it would work - would it help?
server.js
#!/usr/bin/env node
'use strict';
// DEPENDENCIES
const express = require('express');
const vhost = require('vhost');
const path = require('path');
const glx = require('greenlock-express');
// MIDDLEWARE
const app = express();
const giphyApp = require('../giphy-search');
const potatoesApp = require('../rotten-potatoes');
const portfolioApp = require('../dacio.app');
// ROUTES
app.use(vhost('giphy.dacio.app', giphyApp));
app.use(vhost('potatoes.dacio.app', potatoesApp));
app.use(portfolioApp);
// GREENLOCK for HTTPS
glx.create({
version: 'draft-11',
server: 'https://acme-v02.api.letsencrypt.org/directory',
email: 'dacioromero#gmail.com',
agreeTos: true,
approveDomains: [ 'dacio.app', 'giphy.dacio.app', 'potatoes.dacio.app' ],
configDir: '~/.config/acme/',
app: app,
communityMember: false
}).listen(80, 443);

Answer 1

I've switched to using redbird which seems to accomplish everything I was hoping to do.
const path = require('path')
const proxy = require('redbird')({
port: 80,
letsencrypt: {
path: path.join(__dirname, '/certs'),
port: 9999
},
ssl: {
http2: true,
port: 443
}
});
proxy.register('dacio.app', 'http://localhost:8080', {
ssl: {
letsencrypt: {
email: 'dacioromero#gmail.com',
production: true,
}
}
});
proxy.register('giphy.dacio.app', 'http://localhost:8081', {
ssl: {
letsencrypt: {
email: 'dacioromero#gmail.com',
production: true
}
}
})
proxy.register('potatoes.dacio.app', 'http://localhost:8082', {
ssl: {
letsencrypt: {
email: 'dacioromero#gmail.com',
production: true
}
}
});