##### 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
```

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'),