chore: improve the visibility of orphaned containers in logs

When executing the command on a compose file like the one below, orphaned
containers are displayed, but the current implementation does not show
the IDs of these orphaned containers, making them difficult to identify.

```
$ cat compose-full.yaml
services:
  test:
    image: docker.io/library/busybox:latest
    command: ["sleep", "infinity"]
  orphan:
    image: docker.io/library/busybox:latest
    command: ["sleep", "infinity"]

$ cat compose-orphan.yaml
services:
  test:
    image: docker.io/library/busybox:latest
    command: ["sleep", "infinity"]

$ sudo nerdctl compose -f compose-full.yaml up -d
...

$ sudo nerdctl compose -f compose-orphan.yaml down -v
...
WARN[0010] found 1 orphaned containers: [0x4000340000], you can run this command with the --remove-orphans flag to clean it up
...
```

Therefore, this commit modifies to display the IDs of orphaned containers.

Additionally, since there was other logic that performed similar displays,
this commit also modifies it in the same manner.

Signed-off-by: Hayato Kiwata <haytok@amazon.co.jp>

Author: haytok

pkg/composer/down.go

@@ -65,7 +65,7 @@ func (c *Composer) Down(ctx context.Context, downOptions DownOptions) error {
 				return fmt.Errorf("error removeing orphaned containers: %w", err)
 			}
 		} else {
-			log.G(ctx).Warnf("found %d orphaned containers: %v, you can run this command with the --remove-orphans flag to clean it up", len(orphans), orphans)
+			log.G(ctx).Warnf("found %d orphaned containers: %v, you can run this command with the --remove-orphans flag to clean it up", len(orphans), containerShortIDs(orphans))
 		}
 	}
 

pkg/composer/orphans.go

@@ -55,3 +55,11 @@ func (c *Composer) getOrphanContainers(ctx context.Context, parsedServices []*se
 
 	return orphanContainers, nil
 }
+
+func containerShortIDs(containers []containerd.Container) []string {
+	names := make([]string, 0, len(containers))
+	for _, c := range containers {
+		names = append(names, c.ID()[:12])
+	}
+	return names
+}

pkg/composer/run.go

@@ -201,7 +201,7 @@ func (c *Composer) Run(ctx context.Context, ro RunOptions) error {
 				return fmt.Errorf("error removing orphaned containers: %w", err)
 			}
 		} else {
-			log.G(ctx).Warnf("found %d orphaned containers: %v, you can run this command with the --remove-orphans flag to clean it up", len(orphans), orphans)
+			log.G(ctx).Warnf("found %d orphaned containers: %v, you can run this command with the --remove-orphans flag to clean it up", len(orphans), containerShortIDs(orphans))
 		}
 	}
 

pkg/composer/up.go

@@ -116,7 +116,7 @@ func (c *Composer) Up(ctx context.Context, uo UpOptions, services []string) erro
 				return fmt.Errorf("error removing orphaned containers: %w", err)
 			}
 		} else {
-			log.G(ctx).Warnf("found %d orphaned containers: %v, you can run this command with the --remove-orphans flag to clean it up", len(orphans), orphans)
+			log.G(ctx).Warnf("found %d orphaned containers: %v, you can run this command with the --remove-orphans flag to clean it up", len(orphans), containerShortIDs(orphans))
 		}
 	}