MC-33823: Merge CE, EE and B2B changes

Author: Oleksandr Gorkun

nginx.conf.sample

@@ -3,13 +3,13 @@
 #    # use tcp connection
 #    # server  127.0.0.1:9000;
 #    # or socket
-#    server   unix:/var/run/php/php7.0-fpm.sock;
+#    server   unix:/var/run/php/php7.4-fpm.sock;
 # }
 # server {
 #    listen 80;
 #    server_name mage.dev;
 #    set $MAGE_ROOT /var/www/magento2;
-#    set $MAGE_DEBUG_SHOW_ARGS 1;
+#    set $MAGE_DEBUG_SHOW_ARGS 0;
 #    include /vagrant/magento2/nginx.conf.sample;
 # }
 #
@@ -177,6 +177,7 @@ location ~ ^/(index|get|static|errors/report|errors/404|errors/503|health_check)
     try_files $uri =404;
     fastcgi_pass   fastcgi_backend;
     fastcgi_buffers 1024 4k;
+    fastcgi_buffer_size 32k;
 
     fastcgi_param  PHP_FLAG  "session.auto_start=off \n suhosin.session.cryptua=off";
     fastcgi_param  PHP_VALUE "memory_limit=756M \n max_execution_time=18000";