nginx.conf

upstream rancher {
  server rancher-server:8080;
}
map $http_upgrade $connection_upgrade {
  default Upgrade;
  ''      close;
}
server {
  listen 443 ssl http2;
  server_name <SERVER_NAME>;
  ssl_certificate /etc/letsencrypt/live/<DOMAIN>/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/live/<DOMAIN>/privkey.pem;
  location / {
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-Port $server_port;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_pass http://rancher;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection “Upgrade”;
    # This allows the ability for the execute shell window to remain open for up to 15 minutes. Without this parameter, the default is 1 minute and will automatically close.
    proxy_read_timeout 900s;
  }
}
server {
  listen 80;
  server_name <SERVER_NAME>;
  return 301 https://$server_name$request_uri;
}