server {
    listen 3000;
    root /usr/share/nginx/html;
    index index.html;
    resolver 127.0.0.11 ipv6=off valid=30s;

    set $backend_upstream backend:8000;

    location / {
        try_files $uri $uri/ /index.html;
    }

    location /api/ {
        proxy_pass http://$backend_upstream;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }

    location /ws {
        proxy_pass http://$backend_upstream;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_read_timeout 86400;
    }
}