How to get the mapped port on host from a docker container?

Question

I want to run a task in some docker containers on different hosts. And I have written a manager app to manage the containers(start task, stop task, get status, etc...) . Once a

Answer 1

i share /var/run/docker.sock to container and get self info

docker run --rm -it -v /var/run/docker.sock:/var/run/docker.sock alpine:latest sh

in container shell

env //get HOSTNAME

curl --unix-socket /var/run/docker.sock http://localhost/containers/3c6b9e44a622/json

the 3c6b9e44a622 is your HOSTNAME