networking - docker (running in virtual box) expose port on host machine -

i'm running docker in virtual box (docker machine) on mac server. have running containers expose ports host machine, can access them via url of virtual machine + exposed port. i'm not able reach exposed services from outside host system, docker containers sandboxed in own virtual network guess.

is possible expose port on host machine people outside can reach web services running in docker inside virtual machine?

there 2 options:

• selecting bridged networking: in bridged mode, virtual machine appear separate device on network , have own ip address.
• port forwarding (nat): necessary when don't want use bridge apdater

i hope guide can you.