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/app/wwctl/image/list/main_test.go

@@ -0,0 +1,76 @@
+package list
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/warewulf/warewulf/internal/pkg/api/routes/wwapiv1"
+	"github.com/warewulf/warewulf/internal/pkg/testenv"
+	"github.com/warewulf/warewulf/internal/pkg/warewulfd"
+	"github.com/warewulf/warewulf/internal/pkg/wwlog"
+)
+
+func Test_List(t *testing.T) {
+	tests := []struct {
+		name     string
+		args     []string
+		stdout   string
+		inDb     string
+		mockFunc func()
+	}{
+		{
+			name: "image list test",
+			args: []string{"-l"},
+			stdout: `
+IMAGE NAME  NODES  KERNEL VERSION  CREATION TIME        MODIFICATION TIME    SIZE
+----------  -----  --------------  -------------        -----------------    ----
+test        1      kernel          01 Jan 70 00:00 UTC  01 Jan 70 00:00 UTC  0 B
+`,
+			inDb: `
+nodeprofiles:
+  default: {}
+nodes:
+  n01:
+    profiles:
+    - default
+`,
+			mockFunc: func() {
+				imageList = func() (imageInfo []*wwapiv1.ImageInfo, err error) {
+					imageInfo = append(imageInfo, &wwapiv1.ImageInfo{
+						Name:          "test",
+						NodeCount:     1,
+						KernelVersion: "kernel",
+						CreateDate:    uint64(time.Unix(0, 0).Unix()),
+						ModDate:       uint64(time.Unix(0, 0).Unix()),
+						Size:          uint64(1),
+					})
+					return
+				}
+			},
+		},
+	}
+
+	warewulfd.SetNoDaemon()
+	for _, tt := range tests {
+		env := testenv.New(t)
+		defer env.RemoveAll()
+		env.WriteFile("etc/warewulf/nodes.conf", tt.inDb)
+
+		t.Logf("Running test: %s\n", tt.name)
+		t.Run(tt.name, func(t *testing.T) {
+			tt.mockFunc()
+			buf := new(bytes.Buffer)
+			baseCmd := GetCommand()
+			baseCmd.SetArgs(tt.args)
+			baseCmd.SetOut(buf)
+			baseCmd.SetErr(buf)
+			wwlog.SetLogWriter(buf)
+			err := baseCmd.Execute()
+			assert.NoError(t, err)
+			assert.Equal(t, strings.TrimSpace(tt.stdout), strings.TrimSpace(buf.String()))
+		})
+	}
+}