HTTPS & SSL

server {
    listen 443 ssl http2;
    server_name example.com;

    ssl_certificate     /etc/ssl/certs/example.pem;
    ssl_certificate_key /etc/ssl/private/example.key;
    ssl_protocols       TLSv1.2 TLSv1.3;
    ssl_ciphers         HIGH:!aNULL:!MD5;
    ssl_session_cache   shared:SSL:10m;
    ssl_session_timeout 1d;

    # HSTS
    add_header Strict-Transport-Security "max-age=31536000" always;

    location / {
        proxy_pass http://127.0.0.1:3000;
    }
}

# Redirect HTTP to HTTPS
server {
    listen 80;
    server_name example.com;
    return 301 https://$host$request_uri;
}