Description:

The published ports to the host machine keep bounded (in-use) after the container has exited.
Restarting the service makes the problem go away.

Additional info:

* Package version: docker-1:20.10.2-3
* docker --version
Docker version 20.10.2, build 2291f610ae

Steps to reproduce:

Start a container publishing some port and then exit it

$ docker run --tty --interactive --rm --publish 3000:3000 alpine:3.12
/ # ^D (or exit)

Try to do the same operation, another container publishing the same port:

$ docker run --tty --interactive --rm --publish 3000:3000 alpine:3.12
docker: Error response from daemon: driver failed programming external connectivity on endpoint exciting_cray (f133e4a4f593120300b70fac45ab1bd31cef071232546a6f8091f8998c012e39): Bind for :::3000 failed: port is already allocated.

Restart the docker service

# systemcl restart docker

Now you can start again the container
$ docker run --tty --interactive --rm --publish 3000:3000 alpine:3.12