##### 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
```
- Mount a tmpfs directory
    type: list
    version_added: 2.4
  tty:
    description:
      - Allocate a pseudo-TTY.
    type: bool
    default: no
  ulimits:
    description:
      - "List of ulimit options. A ulimit is specified as C(nofile:262144:262144)"
    type: list
  sysctls:
    description:
      - Dictionary of key,value pairs.
    type: dict
    version_added: 2.4
  user:
    description:
      - Sets the username or UID used and optionally the groupname or GID for the specified command.
      - "Can be [ user | user:group | uid | uid:gid | user:gid | uid:group ]"
    type: str
  uts:
    description:
      - Set the UTS namespace mode for the container.
    type: str
  volumes:
    description:
      - List of volumes to mount within the container.
      - "Use docker CLI-style syntax: C(/host:/container[:mode])"