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

    # The API is reached through the same origin, so the browser needs no CORS rules.
    location /api/ {
        proxy_pass http://api:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

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

    add_header X-Content-Type-Options nosniff always;
    add_header Referrer-Policy no-referrer always;
    add_header Content-Security-Policy "default-src 'self'; frame-ancestors 'none'" always;
}
