##### 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
```
self.cpu_period = None
        self.cpu_quota = None
        self.cpuset_cpus = None
        self.cpuset_mems = None
        self.cpu_shares = None
        self.detach = None
        self.debug = None
        self.devices = None
        self.device_read_bps = None
        self.device_write_bps = None
        self.device_read_iops = None
        self.device_write_iops = None
        self.dns_servers = None
        self.dns_opts = None
        self.dns_search_domains = None
        self.domainname = None
        self.env = None
        self.env_file = None
        self.entrypoint = None
        self.etc_hosts = None
        self.exposed_ports = None
        self.force_kill = None
        self.groups = None
        self.healthcheck = None
        self.hostname = None
        self.ignore_image = None
        self.image = None
        self.init = None
        self.interactive = None
        self.ipc_mode = None