diff --git a/pkg/service/service.go b/pkg/service/service.go
index 3b81a7d..417ad51 100644
--- a/pkg/service/service.go
+++ b/pkg/service/service.go
@@ -79,3 +79,33 @@ func killTask(ctx context.Context, task containerd.Task) error {
 
 	return err
 }
+
+func PrepareImage(ctx context.Context, client *containerd.Client, imageName, snapshotter string) (containerd.Image, error) {
+
+	var empty containerd.Image
+	image, err := client.GetImage(ctx, imageName)
+	if err != nil {
+		if !errdefs.IsNotFound(err) {
+			return empty, err
+		}
+
+		img, err := client.Pull(ctx, imageName, containerd.WithPullUnpack)
+		if err != nil {
+			return empty, fmt.Errorf("cannot pull: %s", err)
+		}
+		image = img
+	}
+
+	unpacked, err := image.IsUnpacked(ctx, snapshotter)
+	if err != nil {
+		return empty, fmt.Errorf("cannot check if unpacked: %s", err)
+	}
+
+	if !unpacked {
+		if err := image.Unpack(ctx, snapshotter); err != nil {
+			return empty, fmt.Errorf("cannot unpack: %s", err)
+		}
+	}
+
+	return image, nil
+}
diff --git a/pkg/supervisor.go b/pkg/supervisor.go
index 9393c30..c84e2a5 100644
--- a/pkg/supervisor.go
+++ b/pkg/supervisor.go
@@ -14,7 +14,6 @@ import (
 	"github.com/containerd/containerd"
 	"github.com/containerd/containerd/cio"
 	"github.com/containerd/containerd/containers"
-	"github.com/containerd/containerd/errdefs"
 
 	"github.com/containerd/containerd/namespaces"
 	"github.com/containerd/containerd/oci"
@@ -73,7 +72,7 @@ func (s *Supervisor) Start(svcs []Service) error {
 	for _, svc := range svcs {
 		fmt.Printf("Preparing: %s with image: %s\n", svc.Name, svc.Image)
 
-		img, err := prepareImage(ctx, s.client, svc.Image)
+		img, err := service.PrepareImage(ctx, s.client, svc.Image, defaultSnapshotter)
 		if err != nil {
 			return err
 		}
@@ -197,37 +196,6 @@ func (s *Supervisor) Start(svcs []Service) error {
 	return nil
 }
 
-func prepareImage(ctx context.Context, client *containerd.Client, imageName string) (containerd.Image, error) {
-	snapshotter := defaultSnapshotter
-
-	var empty containerd.Image
-	image, err := client.GetImage(ctx, imageName)
-	if err != nil {
-		if !errdefs.IsNotFound(err) {
-			return empty, err
-		}
-
-		img, err := client.Pull(ctx, imageName, containerd.WithPullUnpack)
-		if err != nil {
-			return empty, fmt.Errorf("cannot pull: %s", err)
-		}
-		image = img
-	}
-
-	unpacked, err := image.IsUnpacked(ctx, snapshotter)
-	if err != nil {
-		return empty, fmt.Errorf("cannot check if unpacked: %s", err)
-	}
-
-	if !unpacked {
-		if err := image.Unpack(ctx, snapshotter); err != nil {
-			return empty, fmt.Errorf("cannot unpack: %s", err)
-		}
-	}
-
-	return image, nil
-}
-
 func getIP(containerID string, taskPID uint32) string {
 	// https://github.com/weaveworks/weave/blob/master/net/netdev.go