Save Dynamic port in Docker for Windows

Question

Is there any way to save and access to the dynamic port that Docker create for each containers? We need it to be Dynamic and it is now just we don't know how to keep them as we need to use it somewhere else. Is maybe Environmental Variable a way? This is for Docker in Windows.

Answer 1

The mapped ports are available via the Docker API in the containers endpoint

The information is exposed in the cli via:

docker port CONTAINER

The same information can be pulled from docker inspect, which allows you to format the output how you want with --format and Go templates

docker inspect CONTAINER --format ^
  '{{ range $i, $el := .NetworkSettings.Ports }}{{(index $el 0).HostPort}}{{end}}'