I've return to Grav and I cannot make run

Hi all,
I've used Grav long time ago, and I can see, Grav things are different now in 1.7.46 version.

Now, I have docker container with Nginx and virtualhosts, and I need multisite installation. I've read Multisite Setup | Grav Documentation (getgrav.org) but always get 403 Forbidden 😦

My virtualhost nginx config:
server { listen 443 ssl;

• listen [::]:443 ssl;*
• server_name xxxx;*
• root /var/www/grav-admin/user/env/xxxx;*
• index index.html index.php;*

• Begin - PHP*

• location ~ .php$ {*
• fastcgi_pass mifpm:9000;*
• fastcgi_split_path_info ^(.+.php)(/.+)$;*
• fastcgi_index index.php;*
• include fastcgi_params;*
• fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;*
• fastcgi_param PATH_INFO $fastcgi_path_info;*

• End - PHP*

  }

Any idea?

Thank you
Alberto