##### 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
```
C(T) (tebibyte), or C(P) (pebibyte)."
      - Omitting the unit defaults to bytes.
    type: str
  memory_swap:
    description:
      - "Total memory limit (memory + swap, format: C(<number>[<unit>])).
        Number is a positive integer. Unit can be 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.
    type: str
  memory_swappiness:
    description:
        - Tune a container's memory swappiness behavior. Accepts an integer between 0 and 100.
        - If not set, the value will be remain the same if container exists and will be inherited from the host machine if it is (re-)created.
    type: int
  mounts:
    version_added: "2.9"
    type: list
    description:
      - 'Specification for mounts to be added to the container. More powerful alternative to I(volumes).'
    suboptions:
      target:
        description:
          - Path inside the container.
        type: str
        required: true
      source:
        description:
          - Mount source (e.g. a volume name or a host path).
        type: str