port mapping in docker code example

Example 1: docker port

HOST:CONTAINER

Example 2: docker port mapping multiple

docker run -it -p 7100-7120:7100-7120/tcp

Example 3: docker run all port mapping

docker run --network host
When running using --network host there is no need to map the ports.
All the docker container ports will be available since the network host mode 
makes the container use the host's network stack.