Previous name (before #1641) was "container." New name (from #1641) was "image"
but a plural name seems better.
Signed-off-by: Jonathon Anderson <janderson@ciq.com>
- Updated `wwctl upgrade` to handle updates
- Maintained `.Container` and `.ContainerName` in tstruct
- Added `ContainerName()` methods to node and profile objects
- Added `--container`, `-C` aliases to wwctl commands (`<node|profile> <add|set>`)
- Added `wwctl container` alias
- Added support for `container_exit.sh` if `image_exit.sh` is not found
Signed-off-by: Jonathon Anderson <janderson@ciq.com>
