Add CreateContainer to the Runtime interface

runtime/containerd/containerd.go

@@ -145,6 +145,11 @@ func (c *ContainerdRuntime) PullImageIfRequired(ctx context.Context, imagename s
 	return nil
 }
 
+func (c *ContainerdRuntime) CreateContainer(ctx context.Context, node *types.NodeConfig) (interface{}, error) {
+	// this is a no-op
+	return "", nil
+}
+
 func (c *ContainerdRuntime) CreateAndStartContainer(ctx context.Context, node *types.NodeConfig) (interface{}, error) {
 	ctx = namespaces.WithNamespace(ctx, containerdNamespace)
 

runtime/ignite/ignite.go

@@ -262,6 +262,11 @@ func (c *IgniteRuntime) CreateAndStartContainer(ctx context.Context, node *types
 	return vmChans, utils.LinkContainerNS(node.NSPath, node.LongName)
 }
 
+func (*IgniteRuntime) CreateContainer(_ context.Context, _ *types.NodeConfig) (string, error) {
+	// this is a no-op
+	return "", nil
+}
+
 func (*IgniteRuntime) StartContainer(_ context.Context, _ string) error {
 	// this is a no-op
 	return nil

runtime/podman/podman.go

@@ -144,7 +144,7 @@ func (r *PodmanRuntime) PullImageIfRequired(ctx context.Context, image string) e
 	return err
 }
 
-// CreateContainer creates a container but does not start it
+// CreateContainer creates a container, but does not start it
 func (r *PodmanRuntime) CreateContainer(ctx context.Context, cfg *types.NodeConfig) (string, error) {
 	sg, err := r.createContainerSpec(ctx, cfg)
 	if err != nil {

runtime/runtime.go

@@ -31,6 +31,8 @@ type ContainerRuntime interface {
 	DeleteNet(context.Context) error
 	// Pull container image if not present
 	PullImageIfRequired(context.Context, string) error
+	// CreateContainer creates a container, but does not start it
+	CreateContainer(context.Context, *types.NodeConfig) (string, error)
 	// Create container returns an extra interface that can be used to receive signals
 	// about the container life-cycle after it was created, e.g. for post-deploy tasks
 	CreateAndStartContainer(context.Context, *types.NodeConfig) (interface{}, error)