nginx conf to redirect

nginx.conf

worker_processes  1;
error_log  logs/error.log;
events {
    worker_connections  1024;
}
http {
    proxy_buffer_size   128k;
    proxy_buffers   4 256k;
    proxy_busy_buffers_size   256k;
    sendfile        on;
    keepalive_timeout  65;
    server {
        listen       8181;
        server_name  localhost;
        rewrite ^ https://alpha.phila.gov$request_uri? permanent;
    }
    include servers/*;
}