fix: use named volumes, reduce nginx connections to 1024, 1 worker process

docker/nginx/nginx.conf

@@ -4,7 +4,7 @@ error_log /var/log/nginx/error.log warn;
 pid /var/run/nginx.pid;
 
 events {
-    worker_connections 2048;
+    worker_connections 1024;
     use epoll;
     multi_accept on;
 }

docker/supervisor/programs.conf

@@ -21,7 +21,7 @@ priority=10
 [program:whatsapp-worker]
 command=/usr/local/bin/php /var/www/html/worker.php --daemon
 process_name=%(program_name)s_%(process_num)02d
-numprocs=3
+numprocs=1
 autostart=true
 autorestart=true
 startretries=10