Reverse Proxy page is insufficient guidance

[opacey]

Describe the bug

Hi, I tried following the instructions on how to set up an HTTPs reverse proxy: https://github.com/janoside/btc-rpc-explorer/blob/master/docs/nginx-reverse-proxy.md

But it threw errors and wasn't verbose enough to help me resolve. I have found the following steps to work:

$ sudo apt update
$ sudo apt upgrade
$ sudo apt install nginx python3-certbot-nginx

$ sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/selfsigned.key -out /etc/ssl/certs/selfsigned.crt
    - complete the form

$ nano ~/.config/btc-rpc-explorer.env
    BTCEXP_HOST=localhost
    BTCEXP_PORT=3002
<ctrl-x>y<enter>

$ sudo cp ~/btc-rpc-explorer/docs/explorer.btc21.org.conf /etc/nginx/sites-available/<fqdn>
$ sudo certbot --text --agree-tos --email <email_addr> -d <fqdn> --manual --preferred-challenges dns --expand --renew-by-default certonly
    - follow certbot's on-screen instructions

$ sudo nano /etc/nginx/sites-available/info.aeio.uk
    server {
            listen 3003 ssl;
            listen [::]:3003 ssl;
            server_name <fqdn>;

            ssl_certificate        /etc/ssl/certs/selfsigned.crt;
            ssl_certificate_key    /etc/ssl/private/selfsigned.key;

            error_page 497 301 =307 https://$host$request_uri;
            location / {
                    proxy_pass http://localhost:3002;
                    proxy_redirect off;
                    proxy_set_header Host $host:$server_port;
                    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                    proxy_set_header X-Forwarded-Ssl on;
            }
    }
<ctrl-x>y<enter>

$ sudo ln -s /etc/nginx/sites-available/info.aeio.uk /etc/nginx/sites-enabled/info.aeio.uk
$ exit

• Forward the TCP port 3003 to the LAN IP of the sever, from your router
• Reboot the sever

Environment (please complete the following information):

• Bitcoin Core / Node Version [e.g. 0.16.3]: v24.0.0
  • NodeJS Version [e.g. 9.x] Node: v18.13.0 NPM: 8.19.3
• Browser [e.g. chrome, safari]: All
• Code Version / Commit [e.g. ab6cde8]: https://github.com/janoside/btc-rpc-explorer/commit/dd5404f385
• Installation Method [e.g. "npm" or "source code"]: "npm install"

Configuration file content

Please include the content from the following files. BE SURE TO MODIFY YOUR CREDENTIALS BEFORE SUBMITTING!!!

• bitcoin.conf N/A
• Your btc-rpc-explorer environment configuration (either $WORKING_DIR/.env or ~/.config/btc-rpc-explorer.env) N/A To Reproduce

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

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Additional context

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