nginx.conf

worker_processes auto;

events {
    worker_connections 1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    keepalive_timeout 65;
    client_max_body_size 10M;

    # Gzip compression
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

    # HTTP — redirect to HTTPS if SSL is configured, otherwise proxy directly
    server {
        listen 80;
        server_name _;

        # Let's Encrypt ACME challenge (needed for SSL certificate issuance)
        location /.well-known/acme-challenge/ {
            root /var/www/certbot;
        }

        return 301 https://$host$request_uri;
    }

    # HTTPS — Cloudflare Origin Certificate
    server {
        listen 443 ssl;
        server_name radar.army www.radar.army;

        ssl_certificate     /etc/nginx/ssl/origin.pem;
        ssl_certificate_key /etc/nginx/ssl/origin.key;
        ssl_protocols       TLSv1.2 TLSv1.3;
        ssl_ciphers         HIGH:!aNULL:!MD5;

        location / {
            proxy_pass         http://radar:3001;
            proxy_http_version 1.1;
            proxy_set_header   Upgrade $http_upgrade;
            proxy_set_header   Connection 'upgrade';
            proxy_set_header   Host $host;
            proxy_set_header   X-Real-IP $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header   X-Forwarded-Proto $scheme;
            proxy_cache_bypass $http_upgrade;
            proxy_read_timeout 90s;
        }
    }
}