add modifictation and creation date

internal/app/wwctl/container/list/main.go

@@ -2,6 +2,7 @@ package list
 
 import (
 	"fmt"
+	"time"
 
 	"github.com/hpcng/warewulf/internal/pkg/api/container"
 	"github.com/hpcng/warewulf/internal/pkg/wwlog"
@@ -16,12 +17,16 @@ func CobraRunE(cmd *cobra.Command, args []string) (err error) {
 		return
 	}
 
-	fmt.Printf("%-25s %-6s %-6s\n", "CONTAINER NAME", "NODES", "KERNEL VERSION")
+	fmt.Printf("%-16s %-6s %-16s %-18s %-18s\n", "CONTAINER NAME", "NODES", "KERNEL VERSION", "CREATION TIME", "MODIFICATION TIME")
 	for i := 0; i < len(containerInfo); i++ {
-		fmt.Printf("%-25s %-6d %-6s\n",
+		createTime := time.Unix(int64(containerInfo[i].CreateDate), 0)
+		modTime := time.Unix(int64(containerInfo[i].ModDate), 0)
+		fmt.Printf("%-16s %-6d %-16s %-18s %-18s\n",
 			containerInfo[i].Name,
 			containerInfo[i].NodeCount,
-			containerInfo[i].KernelVersion)
+			containerInfo[i].KernelVersion,
+			createTime.Format(time.RFC822),
+			modTime.Format(time.RFC822))
 	}
 	return
 }

internal/pkg/api/container/container.go

@@ -290,11 +290,22 @@ func ContainerList() (containerInfo []*wwapiv1.ContainerInfo, err error) {
 		wwlog.Debug("Finding kernel version for: %s\n", source)
 		kernelVersion := container.KernelVersion(source)
 
+		creationTime, err := os.Stat(container.SourceDir(source))
+		if err != nil {
+			wwlog.Error("%s\n", err)
+		}
+		modTime, err := os.Stat(container.ImageFile(source))
+		if err != nil {
+			wwlog.Error("%s\n", err)
+		}
 		containerInfo = append(containerInfo, &wwapiv1.ContainerInfo{
 			Name:          source,
 			NodeCount:     uint32(nodemap[source]),
 			KernelVersion: kernelVersion,
+			CreateDate:    uint64(creationTime.ModTime().Unix()),
+			ModDate:       uint64(modTime.ModTime().Unix()),
 		})
+
 	}
 	return
 }

internal/pkg/api/routes/v1/routes.proto

@@ -43,6 +43,9 @@ message ContainerInfo {
 	string name = 1;
 	uint32 nodeCount = 2;
 	string kernelVersion = 3;
+	uint64 createDate = 4; // creation date in unix time
+	uint64 modDate = 5; // date of last modification in unix time
+	uint64 size = 6; // size of chroot and images in bytes
 }
 
 // ContainerListResponse has all information that ContainerList provides.