feat: backend executor implement

internal/containerengine/moby.go

@@ -37,6 +37,18 @@ func (e *MobyEngine) Ping(ctx context.Context) error {
 	return nil
 }
 
+func (e *MobyEngine) PullImage(ctx context.Context, imageReference string) error {
+	response, err := e.client.ImagePull(ctx, imageReference, client.ImagePullOptions{})
+	if err != nil {
+		return fmt.Errorf("pull image %s: %w", imageReference, err)
+	}
+	defer response.Close()
+	if err := decodeImageLoadResponse(response); err != nil {
+		return fmt.Errorf("pull image %s response: %w", imageReference, err)
+	}
+	return nil
+}
+
 func (e *MobyEngine) LoadImage(ctx context.Context, input io.Reader) error {
 	if input == nil {
 		return errors.New("image archive reader is required")
@@ -99,10 +111,13 @@ func (e *MobyEngine) CreateContainer(ctx context.Context, spec ContainerSpec) (C
 			ReadOnly: item.ReadOnly,
 		})
 	}
+	stopTimeout := spec.StopTimeoutSeconds
 	result, err := e.client.ContainerCreate(ctx, client.ContainerCreateOptions{
 		Config: &container.Config{
-			Env:    append([]string(nil), spec.Environment...),
-			Labels: cloneMap(spec.Labels),
+			Env:         append([]string(nil), spec.Environment...),
+			Labels:      cloneMap(spec.Labels),
+			User:        spec.User,
+			StopTimeout: &stopTimeout,
 		},
 		HostConfig: &container.HostConfig{
 			NetworkMode: container.NetworkMode(spec.NetworkMode),
@@ -133,6 +148,13 @@ func (e *MobyEngine) StartContainer(ctx context.Context, idOrName string) error
 	return nil
 }
 
+func (e *MobyEngine) StopContainer(ctx context.Context, idOrName string) error {
+	if _, err := e.client.ContainerStop(ctx, idOrName, client.ContainerStopOptions{}); err != nil {
+		return engineError("stop container", err)
+	}
+	return nil
+}
+
 func (e *MobyEngine) InspectContainer(ctx context.Context, idOrName string) (Container, error) {
 	result, err := e.client.ContainerInspect(ctx, idOrName, client.ContainerInspectOptions{})
 	if err != nil {
@@ -154,6 +176,10 @@ func (e *MobyEngine) InspectContainer(ctx context.Context, idOrName string) (Con
 		record.ImageReference = response.Config.Image
 		record.Environment = append([]string(nil), response.Config.Env...)
 		record.Labels = cloneMap(response.Config.Labels)
+		record.User = response.Config.User
+		if response.Config.StopTimeout != nil {
+			record.StopTimeoutSeconds = *response.Config.StopTimeout
+		}
 	}
 	if response.HostConfig != nil {
 		record.NetworkMode = string(response.HostConfig.NetworkMode)