I want to use nginx referer module to restrict access to a URL containing a directory /radio/
Only allowing access to it from a link with http referer *.mysite.* (anysubdomain.mysite.anytld) otherwise redirect to 403

Is the referer module already loaded in nginx if not how do I load it

I found various code examples to add to the conf file and coupled this together and added it to the end of the conf file, but it doesn't work, entering a URL directly into the browser serves it

<code>
server {
location /radio/ {
valid_referers none blocked server_names ~\.mysite\.;
if ($invalid_referer) {
return 403;
}
}
}
</code>

Should just the location bit of code be added inside an existing server block

My set up is nginx in docker on Ubunto 18 on a Digital Ocean droplet

Any help would be appreciated, been working on this for days

Best regards
Ashley