server {
    listen 80;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;

    # Same-origin API calls from the SPA get forwarded to the backend
    # container by its compose service name -- the frontend never needs
    # to know a real hostname/port for the API, and there's no CORS to deal with.
    location /api/ {
        proxy_pass http://dota-random-web:8080/api/;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

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