c8d/progress: Show Mounted/Exists status

Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>

daemon/containerd/progress.go

@@ -8,9 +8,11 @@ import (
 
 	"github.com/containerd/containerd/content"
 	cerrdefs "github.com/containerd/containerd/errdefs"
+	"github.com/containerd/containerd/images"
 	"github.com/containerd/containerd/remotes"
 	"github.com/containerd/containerd/remotes/docker"
 	"github.com/containerd/log"
+	"github.com/distribution/reference"
 	"github.com/docker/docker/internal/compatcontext"
 	"github.com/docker/docker/pkg/progress"
 	"github.com/docker/docker/pkg/stringid"
@@ -209,8 +211,18 @@ func (p *pushProgress) UpdateProgress(ctx context.Context, ongoing *jobs, out pr
 		}
 
 		if status.Committed && status.Offset >= status.Total {
-			if p.isMountable(j.Digest) {
-				progress.Update(out, id, "Mounted")
+			if status.MountedFrom != "" {
+				from := status.MountedFrom
+				if ref, err := reference.ParseNormalizedNamed(from); err == nil {
+					from = reference.Path(ref)
+				}
+				progress.Update(out, id, "Mounted from "+from)
+			} else if status.Exists {
+				if images.IsLayerType(j.MediaType) {
+					progress.Update(out, id, "Layer already exists")
+				} else {
+					progress.Update(out, id, "Already exists")
+				}
 			} else {
 				progress.Update(out, id, "Pushed")
 			}