##### SUMMARY
If there's currently a container with image `repo/name:tag1` running (or created), and I change the `docker_container` image tag to `repo/name:tag2` (where this image hasn't been pulled yet), `docker_container` will not notice that the image changed and will not recreate the container.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
docker_container

##### ANSIBLE VERSION
```paste below
2.9.0
```

)
        differences = DifferenceTracker()
        for key, value in config_mapping.items():
            if getattr(self.parameters, key, None):
                compare = self.parameters.client.comparisons[self.parameters_map.get(key, key)]
                match = self._compare(getattr(self.parameters, key), value, compare)
                if not match:
                    
                    differences.add(key, parameter=getattr(self.parameters, key), active=value)
        different = not differences.empty
        return different, differences
    def has_network_differences(self):
        '''
        Check if the container is connected to requested networks with expected options: links, aliases, ipv4, ipv6
        '''
        different = False
        differences = []
        if not self.parameters.networks:
            return different, differences
        if not self.container.get('NetworkSettings'):
            self.fail("has_missing_networks: Error parsing container properties. NetworkSettings missing.")
        connected_networks = self.container['NetworkSettings']['Networks']
        for network in self.parameters.networks:
            network_info = connected_networks.get(network['name'])
            if network_info is None:
                different = True
                differences.append(dict(
                    parameter=network,
                    container=None
                ))