nginx-custom.conf

worker_processes auto;

events {
    worker_connections 1024;
}

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

    sendfile on;
    keepalive_timeout 65;

    types_hash_max_size 2048;
    types_hash_bucket_size 128;

    server {
        listen 3000;
        server_name localhost;

        # Route browser API calls through the web container so private backend
        # endpoints remain internal-only in WAF/private networking deployments.
        location /api/ {
            proxy_http_version 1.1;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_pass APP_BACKEND_API_URL/;
        }

        location / {
            root /usr/share/nginx/html;
            try_files $uri $uri/ /index.html;
        }

        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
            root /usr/share/nginx/html;
        }
    }
}