Comment 2 for bug 1996906

Are you sure about this? This would basically mean changing pretty much every k8s charm, and significant documentation updates. For example on https://juju.is/docs/sdk/metadata-yaml it says:

```
# (Optional) A map of containers to be created adjacent to the charm. This field
# is required when the charm is targeting Kubernetes, where each of the specified
# containers will be created as sidecars to the charm in the same pod.
containers:
```

This implies that having a "containers" entry is all that's needed for a kubernetes charm. What exactly will Juju do with the "containers" entry on a machine charm currently?