##### SUMMARY
`docker_container` should so some sanity checks that not two volumes / mount points use the same target inside the container, so that especially when recreating containers, they won't be destroyed first before recreating fails.

This becomes more important once #49808 is merged.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
docker_container

##### ANSIBLE VERSION
```
2.8.0
```

memory_reservation=host_config.get('MemoryReservation'),
            memory_swap=host_config.get('MemorySwap'),
        )
        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:
            if connected_networks.get(network['name'], None) is None:
                different = True
                differences.append(dict(
                    parameter=network,
                    container=None