Add State status constants to spec-go

Signed-off-by: Renaud Gaubert <[email protected]>

Author: Renaud Gaubert

specs-go/state.go

@@ -1,5 +1,20 @@
 package specs
 
+const (
+	// StateCreating indicates that the container is being created
+	StateCreating = "creating"
+
+	// StateCreated indicates that the runtime has finished the create operation
+	StateCreated = "created"
+
+	// StateRunning indicates that the container process has executed the
+	// user-specified program but has not exited
+	StateRunning = "running"
+
+	// StateStopped indicates that the container process has exited
+	StateStopped = "stopped"
+)
+
 // State holds information about the runtime state of the container.
 type State struct {
 	// Version is the version of the specification that is supported.