Implement options for runtime specific settings

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

runtime/runtime.go

@@ -20,8 +20,11 @@ type CreateOpts struct {
 	// Rootfs mounts to perform to gain access to the container's filesystem
 	Rootfs []mount.Mount
 	// IO for the container's main process
-	IO         IO
+	IO IO
+	// Checkpoint digest to restore container state
 	Checkpoint string
+	// Options for the runtime and container
+	Options []byte
 }
 
 type Exit struct {

runtime/task.go

@@ -32,7 +32,7 @@ type Task interface {
 	// CloseStdin closes the processes stdin
 	CloseIO(context.Context, uint32) error
 	// Checkpoint checkpoints a container to an image with live system data
-	Checkpoint(context.Context, string, map[string]string) error
+	Checkpoint(context.Context, string, []byte) error
 	// DeleteProcess deletes a specific exec process via the pid
 	DeleteProcess(context.Context, uint32) (*Exit, error)
 	// Update sets the provided resources to a running task