Installing seafile 7 with nginx

I am trying to install a new debian 9 sevrer with seafile 7 following this procedure:

i installed in “/opt/seafile” instead of “/var/www/html” (not enough space for the repository in var/www to hold my data )
(How) can i make a linked folder from from the seafile folder to var/www/html???

When i get to the part where i have to edit nginx i don’t know where the webserver file of seafile are

nano /etc/nginx/sites-available/seafile

server {
listen 80;
listen [::]:80;
root /var/www/html/seafile; <<<< what is my path when i extracted the TARball to /opt/seafile???

 client_max_body_size 100M;

 autoindex off;

 access_log /var/log/nginx/;
 error_log /var/log/nginx/;

 location / {
        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_set_header   X-Forwarded-Host $server_name;
        proxy_read_timeout  1200s;

 location /seafhttp {
        rewrite ^/seafhttp(.*)$ $1 break;
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_connect_timeout  36000s;
        proxy_read_timeout  36000s;
        proxy_send_timeout  36000s;
        send_timeout  36000s;

location /media {
        root /var/www/html/seahub;


Kind Regards

Check out the Seafile community manual, since it guides you through every step.