##### SUMMARY
Hi,

When you want to pass an empty list or a null/None value to published_ports on docker_container it's actually impossible, so you get this error

```
File \"/tmp/ansible_docker_container_payload_ZOZc5l/__main__.py\", line 1448, in _parse_publish_ports\r\n  File \"/tmp/ansible_docker_container_payload_ZOZc5l/__main__.py\", line 1003, in parse_port_range\r\nValueError: invalid literal for int() with base 10: ''\r\n",
 ```

Ref #61602

The problem is that we parse via `_parse_publish_ports` the parameter if self.published_ports is not None or not 'all'
Also after that there is no control on each elements of the list, (not like for the volumes parameter by example)

So I propose to patch line 1151
`self.published_ports = self._parse_publish_ports() `
to
`self.published_ports = self._parse_publish_ports() if self.published_ports else None`

Best regards

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
* docker_container

##### ANSIBLE VERSION

```
ansible 2.8.4
```
- Command that overwrites the default ENTRYPOINT of the image.
    type: list
  etc_hosts:
    description:
      - Dict of host-to-IP mappings, where each host name is a key in the dictionary.
        Each host name will be added to the container's /etc/hosts file.
    type: dict
  exposed_ports:
    description:
      - List of additional container ports which informs Docker that the container
        listens on the specified network ports at runtime.
        If the port is already exposed using EXPOSE in a Dockerfile, it does not
        need to be exposed again.
    type: list
    aliases:
      - exposed
      - expose
  force_kill:
    description:
      - Use the kill command when stopping a running container.
    type: bool
    default: no
    aliases:
      - forcekill
  groups:
    description:
      - List of additional group names and/or IDs that the container process will run as.
    type: list
  healthcheck:
    description: