Pihole Lighttpd - Reverse Proxy to nginx

pihole.conf

# Access Pihole UI on http[s]://web.tld/pihole
# Add ^~ to disable php execution, since lighttpd has already executed the
# php scripts, no need to execute the output of php files from lighttpd

location ^~ /pihole/ {
  proxy_pass http://localhost:6775/admin/;
  proxy_set_header Host $host;
  proxy_set_header X-Real-IP $remote_addr;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_read_timeout 90;
}