##### 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
```

- Container restart policy. Place quotes around I(no) option.
    type: str
    choices:
      - 'no'
      - 'on-failure'
      - 'always'
      - 'unless-stopped'
  restart_retries:
    description:
      - Use with restart policy to control maximum number of restart attempts.
    type: int
  runtime:
    description:
      - Runtime to use for the container.
    type: str
    version_added: "2.8"
  shm_size:
    description:
      - "Size of C(/dev/shm) (format: C(<number>[<unit>])). Number is positive integer.
        Unit can be C(B) (byte), C(K) (kibibyte, 1024B), C(M) (mebibyte), C(G) (gibibyte),
        C(T) (tebibyte), or C(P) (pebibyte)."
      - Omitting the unit defaults to bytes. If you omit the size entirely, the system uses C(64M).
    type: str
  security_opts:
    description:
      - List of security options in the form of C("label:user:User")
    type: list
  state:
    description:
      - 'I(absent) - A container matching the specified name will be stopped and removed. Use force_kill to kill the container