Merge pull request #27460 from Microsoft/jjh/dockerpid

Windows: Calculate PID file after root
Upstream-commit: ce6cfef36d6fa52df6ebdd3dd996d6bebe0f308d
Component: engine

components/engine/daemon/config_windows.go

@@ -2,14 +2,15 @@ package daemon
 
 import (
 	"os"
+	"path/filepath"
 
 	"github.com/docker/docker/api/types"
 	"github.com/spf13/pflag"
 )
 
 var (
-	defaultPidFile = os.Getenv("programdata") + string(os.PathSeparator) + "docker.pid"
-	defaultGraph   = os.Getenv("programdata") + string(os.PathSeparator) + "docker"
+	defaultPidFile string
+	defaultGraph   = filepath.Join(os.Getenv("programdata"), "docker")
 )
 
 // bridgeConfig stores all the bridge driver specific