##### 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
```
cap_drop=dict(type='list', elements='str'),
        cleanup=dict(type='bool', default=False),
        command=dict(type='raw'),
        comparisons=dict(type='dict'),
        cpu_period=dict(type='int'),
        cpu_quota=dict(type='int'),
        cpuset_cpus=dict(type='str'),
        cpuset_mems=dict(type='str'),
        cpu_shares=dict(type='int'),
        detach=dict(type='bool', default=True),
        devices=dict(type='list', elements='str'),
        device_read_bps=dict(type='list', elements='dict', options=dict(
            path=dict(required=True, type='str'),
            rate=dict(required=True, type='str'),
        )),
        device_write_bps=dict(type='list', elements='dict', options=dict(
            path=dict(required=True, type='str'),
            rate=dict(required=True, type='str'),
        )),
        device_read_iops=dict(type='list', elements='dict', options=dict(
            path=dict(required=True, type='str'),
            rate=dict(required=True, type='int'),
        )),
        device_write_iops=dict(type='list', elements='dict', options=dict(
            path=dict(required=True, type='str'),
            rate=dict(required=True, type='int'),
        )),
        dns_servers=dict(type='list', elements='str'),
        dns_opts=dict(type='list', elements='str'),
        dns_search_domains=dict(type='list', elements='str'),