##### 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
```
memory_swap=host_config.get('MemorySwap'),
            ))
        differences = DifferenceTracker()
        for key, value in config_mapping.items():
            minimal_version = self.parameters.client.option_minimal_versions.get(key, {})
            if not minimal_version.get('supported', True):
                continue
            compare = self.parameters.client.comparisons[self.parameters_map.get(key, key)]
            self.log('check differences %s %s vs %s (%s)' % (key, getattr(self.parameters, key), str(value), compare))
            if getattr(self.parameters, key, None) is not None:
                match = self._compare(getattr(self.parameters, key), value, compare)
                if not match:
                    
                    p = getattr(self.parameters, key)
                    c = value
                    if compare['type'] == 'set':
                        
                        if p is not None:
                            p = sorted(p)
                        if c is not None:
                            c = sorted(c)
                    elif compare['type'] == 'set(dict)':
                        
                        if key == 'expected_mounts':
                            
                            def sort_key_fn(x):
                                return x['target']
                        else:
                            
                            def sort_key_fn(x):