Nginx dynamic matching document root by host(accessing domain name) /*USE AT YOUR OWN RISK*/

nginx.conf

server {

    listen 0.0.0.0:80 default_server;
    listen [::]:80 default_server;
    server_name _;
    server_tokens off;

    ## Document root
    set $base_path "/usr/share/nginx";
    set $domain_path "${host}";
    ## Strip www prefix from $domain_path
    if ($domain_path ~* ^www\.(.*)$) {
        set $domain_path $1;
    }
    ## Decide real path depends on $domain_path,
    ## attempting 'dist' for html apps using node
    ## attempting 'public' for backend apps like laravel
    if (-d $base_path/$domain_path/dist) {
        set $domain_path "${domain_path}/dist";
    }
    if (-d $base_path/$domain_path/public) {
        set $domain_path "${domain_path}/public";
    }
    ## No matches found with current domain, resetting path to html
    if (!-d $base_path/$domain_path) {
        set $domain_path "html";
    }
    ## /var/share/nginx/{ACCESS_DOMAIN_WITHOUT_WWW} or {html} as fallback
    root $base_path/$domain_path;

    location / {
        ## Disable gzip compression to be safe against BREACH attack
        gzip off;
        index index.html index.php;
        try_files $uri $uri/ @rewrite;
    }
    location @rewrite {
        if (-f $base_path/$domain_path/index.html) {
            rewrite ^(.+)$ $uri.html last;
        }
        if (-f $base_path/$domain_path/index.php) {
            rewrite ^(.+)$ $uri.php last;
        }
        if (!-f $request_filename){
            return 403;
        }
    }
    location ~ \.html$ {
        try_files $uri /index.html =404;
    }

    ## Pass the PHP scripts to FastCGI server listening on socket
    location ~ \.php$ {
        try_files $uri /index.php =404;
        fastcgi_pass unix:/var/opt/remi/php71/run/php-fpm/php-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
        fastcgi_param DOCUMENT_ROOT $realpath_root;
        include fastcgi_params;
    }

    ## Deny all attempts to access hidden files such as .htaccess, .htpasswd, .DS_Store(Mac)
    location ~ /\. {
        deny all;
    }

}