##### 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_reservation=dict(type='str'),
        memory_swap=dict(type='str'),
        memory_swappiness=dict(type='int'),
        mounts=dict(type='list', elements='dict', options=dict(
            target=dict(type='str', required=True),
            source=dict(type='str'),
            type=dict(type='str', choices=['bind', 'volume', 'tmpfs', 'npipe'], default='volume'),
            read_only=dict(type='bool'),
            consistency=dict(type='str', choices=['default', 'consistent', 'cached', 'delegated']),
            propagation=dict(type='str', choices=['private', 'rprivate', 'shared', 'rshared', 'slave', 'rslave']),
            no_copy=dict(type='bool'),
            labels=dict(type='dict'),
            volume_driver=dict(type='str'),
            volume_options=dict(type='dict'),
            tmpfs_size=dict(type='str'),
            tmpfs_mode=dict(type='str'),
        )),
        name=dict(type='str', required=True),
        network_mode=dict(type='str'),
        networks=dict(type='list', elements='dict', options=dict(
            name=dict(type='str', required=True),
            ipv4_address=dict(type='str'),
            ipv6_address=dict(type='str'),
            aliases=dict(type='list', elements='str'),
            links=dict(type='list', elements='str'),
        )),
        networks_cli_compatible=dict(type='bool'),
        oom_killer=dict(type='bool'),
        oom_score_adj=dict(type='int'),
        output_logs=dict(type='bool', default=False),