The nginx server configuration file needed to host the MirrorMirror application

mirror.conf

server {
    listen 80;
    server_name localhost;
    root /home/pi/projects/MirrorMirror/public;
    
    index index.html index.htm index.php;
    
    charset utf-8;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }
    
    location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    access_log off;
    error_log  /var/log/nginx/myapp-error.log error;

    sendfile off;

    client_max_body_size 100m;

    location ~ \.php$ {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_intercept_errors off;
        fastcgi_buffer_size 16k;
        fastcgi_buffers 4 16k;
    }

    location ~ /\.ht {
        deny all;
    }
}

We got everything to work, but now it just opens the "Welcome to nginx on Debian" page. Anyone know what to do after that?

So update, I just had to change the permissions of the default file and delete it (leaving only mirror.conf) and it worked!

mine only says welcome to nginx

For people still getting the error "ln: target 'reload' is not a directory".
Use the command:
sudo ln -s /etc/nginx/sites-available/mirror.conf /etc/nginx/sites-enabled/mirror.conf && sudo service nginx reload