Add container name to new image found log, useful when running monitor-only

[martini1992]

• What your PR contributes
  Simply added the container name to the "Found new image" log, because in monitor-only it's not clear which container needs to be recreated, also there are duplicate log lines if the same image is used in multiple containers (MariaDB etc). I added it to the end of the message to limit issues if people are parsing the log message in their workflows.

• Which issues it solves
  No issue, I can open one if required but for such a tiny change I thought any discussion could happen here.

• Tests that verify the code your contributing
  Unable to get a dev env set up, there are no instructions on the project. Unable to build a test docker image that runs. The Go compiler doesn't complain though, which from such a small change I would expect it to if I'd gone wrong.

• Updates to the documentation
  None required

[github-actions]

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