If you want to expose only one port, this is what you need to do:
docker run -p <host_port>:<container_port>
If you want to expose multiple ports, simply provide multiple -p arguments which you can use below command:
docker run -p <host_port1>:<container_port1> -p <host_port2>:<container_port2>
I hope the above explanation will be helpful for you.
Thanks.