Setting up CGI (nginx)
On the sandbox/sandbot we have an nginx webserver.
To enable a cgi-bin,
apt install fcgiwrap
Then in the nginx settings...
# cgi location /cgi-bin/ { gzip off; root /usr/lib; fastcgi_pass unix:/var/run/fcgiwrap.socket; include /etc/nginx/fastcgi_params; fastcgi_param SCRIPT_FILENAME /usr/lib$fastcgi_script_name; }