FEATURE: add an overwrite port option with package explore
When several package are running simuataneously it is needed to let the host choose which port need to be expose. So the setup exposed port need to be overwritable:
kufair package explore <pack-name> --exposed-port="1234,4567"
Where the order of the ports is the same as in the setup.json
file. (We could also imagine to name the ports and make a mapping:
kufair package explore <pack-name> --expose-port="wetty:1234, jupyter:4567"