##### 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
```
- 'rprivate'
          - 'shared'
          - 'rshared'
          - 'slave'
          - 'rslave'
      no_copy:
        description:
          - False if the volume should be populated with the data from the target. Only valid for the C(volume) type.
          - The default value is C(false).
        type: bool
      labels:
        description:
          - User-defined name and labels for the volume. Only valid for the C(volume) type.
        type: dict
      volume_driver:
        description:
          - Specify the volume driver. Only valid for the C(volume) type.
          - See L(here,https://docs.docker.com/storage/volumes/#use-a-volume-driver) for details.
        type: str
      volume_options:
        description:
          - Dictionary of options specific to the chosen volume_driver. See L(here,https://docs.docker.com/storage/volumes/#use-a-volume-driver)
            for details.
        type: dict
      tmpfs_size:
        description:
          - "The size for the tmpfs mount in bytes. Format: <number>[<unit>]"
          - "Number is a positive integer. Unit can be one of C(B) (byte), C(K) (kibibyte, 1024B), C(M) (mebibyte), C(G) (gibibyte),
             C(T) (tebibyte), or C(P) (pebibyte)"
          - "Omitting the unit defaults to bytes."