##### 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
```

device_write_iops:
    description:
      - "List of device and write rate (IO per second) to device."
    type: list
    suboptions:
      path:
        description:
        - Device path in the container.
        type: str
        required: yes
      rate:
        description:
        - "Device read limit."
        - "Must be a positive integer."
        type: int
        required: yes
    version_added: "2.8"
  dns_opts:
    description:
      - list of DNS options
    type: list
  dns_servers:
    description:
      - List of custom DNS servers.
    type: list
  dns_search_domains:
    description:
      - List of custom DNS search domains.
    type: list
  domainname: