Rename "container" to "image"

- 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>

internal/pkg/image/mountpoints.go

@@ -0,0 +1,41 @@
+package image
+
+import (
+	"strings"
+
+	warewulfconf "github.com/warewulf/warewulf/internal/pkg/config"
+	"github.com/warewulf/warewulf/internal/pkg/wwlog"
+)
+
+/*
+Create a slice iof MntDetails from a string slice with following
+format "source:[:destination][:readonly]" if destination is not
+given, the source is used as destination
+*/
+func InitMountPnts(binds []string) (mounts []*warewulfconf.MountEntry) {
+	wwlog.Debug("Trying to mount following mount points: %s", mounts)
+	for _, b := range binds {
+		bind := strings.Split(b, ":")
+		dest := bind[0]
+		if len(bind) >= 2 {
+			dest = bind[1]
+		}
+		readonly := false
+		copy_ := false
+		if len(bind) >= 3 {
+			if bind[2] == "ro" {
+				readonly = true
+			} else if bind[2] == "copy" {
+				copy_ = true
+			}
+		}
+		mntPnt := warewulfconf.MountEntry{
+			Source:    bind[0],
+			Dest:      dest,
+			ReadOnlyP: &readonly,
+			CopyP:     &copy_,
+		}
+		mounts = append(mounts, &mntPnt)
+	}
+	return mounts
+}