nginx.conf

server {
    listen 80;
    server_name _;
    root /usr/share/nginx/html;
    index index.html;

    # Serve static files
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Do not fallback asset requests to index.html.
    # Missing chunks must return 404 to avoid silent white-screen module failures.
    location /assets/ {
        try_files $uri =404;
        access_log off;
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # Proxy API requests to backend
    location /api/ {
        proxy_pass http://solbit-server:3001;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }

    # Proxy Socket.IO requests to backend
    location /socket.io/ {
        proxy_pass http://solbit-server: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;
    }
}