verdaccio: [V5] Verdaccio is not working behind http2 proxy

Describe the bug

Verdaccio v5 is not detecting headers passed from reverse proxy, I think it’s because of http2 is lowercasing all headers

log

{
  "level": 25,
  "time": 1619156769309,
  "pid": 7,
  "hostname": "verdaccio-5bdb8cd95f-6d78j",
  "req":
  {
    "method": "GET",
    "url": "/",
    "query": {},
    "params": {},
    "headers":
    {
      "host": "npm.domain.com",
      "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.128 Safari/537.36",
      "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
      "accept-encoding": "gzip, deflate, br",
      "accept-language": "en-US,en;q=0.9,de;q=0.8",
      "cache-control": "no-cache",
      "pragma": "no-cache",
      "sec-ch-ua": "\"Google Chrome\";v=\"89\", \"Chromium\";v=\"89\", \";Not A Brand\";v=\"99\"",
      "sec-ch-ua-mobile": "?0",
      "sec-fetch-dest": "document",
      "sec-fetch-mode": "navigate",
      "sec-fetch-site": "none",
      "sec-fetch-user": "?1",
      "upgrade-insecure-requests": "1",
      "x-forwarded-for": "172.30.2.20",
      "x-forwarded-host": "npm.domain.com",
      "x-forwarded-port": "443",
      "x-forwarded-proto": "https",
      "x-forwarded-server": "internal-traefik-6d4789455-hnklc",
      "x-real-ip": "172.30.2.20"
    },
    "remoteAddress": "10.42.235.33",
    "remotePort": 38724
  },
  "ip": "10.42.235.33",
  "msg": "@{ip} requested '@{req.method} @{req.url}'"
}

Woraround: override VERDACCIO_PUBLIC_URL

To Reproduce

running verdaccio behind traefik reverse proxy, which is terminating https (http2) connection.

Expected behavior

Verdaccio should detect lowercase reverse proxy headers.

Screenshots

Configuration File (cat ~/.config/verdaccio/config.yaml)

Environment information

Debugging output

• $ NODE_DEBUG=request verdaccio display request calls (verdaccio <–> uplinks)
• $ DEBUG=express:* verdaccio enable extreme verdaccio debug mode (verdaccio api)
• $ npm -ddd prints:
• $ npm config get registry prints: