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

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

    location /api/ {
        resolver 127.0.0.11 valid=30s;
        set $api_upstream http://api:4000;
        proxy_pass $api_upstream;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }

    location /ws/ {
        resolver 127.0.0.11 valid=30s;
        set $ws_upstream http://api:4000;
        proxy_pass $ws_upstream;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }
}