server {
    listen 80;
    
    # 1. Handle the path Traefik is routing
    location /lab/data-dashboard/ {
        alias /usr/share/nginx/html/;
        try_files $uri $uri/ /index.html;
    }

    # 2. Add an explicit health check endpoint (returns 200 OK)
    location /health {
        return 200 'healthy';
        add_header Content-Type text/plain;
    }

    # 3. Fallback for SPA routing
    location / {
        root /usr/share/nginx/html;
        try_files $uri $uri/ /index.html;
    }
}