Magento 2 : Multi Store configuration

Sometime , we need to create multisite application using magento 2 framework.
Following example shows the nginix confgiration of multisite application with magento website or store

In this example contains three sites and each has different domain

upstream fastcgi_backend {
    server   unix:/run/php/php7.4-fpm.sock;
}

map $http_host $MAGE_RUN_CODE {
    default '';
    magento2lst.dev.bn.com ban;
    magento2lst.dev.jk.com jak;
    
}
server {
    listen 80;
    server_name magento2lst.dev.com  magento2lst.dev.bn.com magento2lst.dev.jk.com;
    set $MAGE_ROOT /var/www/html/codepool;
    set $MAGE_MODE developer  ;
    set $MAGE_RUN_TYPE website;
    #set $MAGE_RUN_TYPE store;
    include /var/www/html/codepool/nginx.conf.sample;
}

We need to add additional configuration in /var/www/html/codepool/nginx.conf.sample


    fastcgi_index  index.php;
    fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
    # START - Multisite customization
    fastcgi_param MAGE_RUN_TYPE $MAGE_RUN_TYPE;
    fastcgi_param MAGE_RUN_CODE $MAGE_RUN_CODE;
    # END - Multisite customization
    include        fastcgi_params;