vendor: update buildkit to v0.8

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/moby/buildkit/util/system/path.go

@@ -0,0 +1,18 @@
+package system
+
+// DefaultPathEnvUnix is unix style list of directories to search for
+// executables. Each directory is separated from the next by a colon
+// ':' character .
+const DefaultPathEnvUnix = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+
+// DefaultPathEnvWindows is windows style list of directories to search for
+// executables. Each directory is separated from the next by a colon
+// ';' character .
+const DefaultPathEnvWindows = "c:\\Windows\\System32;c:\\Windows"
+
+func DefaultPathEnv(os string) string {
+	if os == "windows" {
+		return DefaultPathEnvWindows
+	}
+	return DefaultPathEnvUnix
+}

vendor/github.com/moby/buildkit/util/system/path_unix.go

@@ -2,11 +2,6 @@
 
 package system
 
-// DefaultPathEnv is unix style list of directories to search for
-// executables. Each directory is separated from the next by a colon
-// ':' character .
-const DefaultPathEnv = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
-
 // CheckSystemDriveAndRemoveDriveLetter verifies that a path, if it includes a drive letter,
 // is the system drive. This is a no-op on Linux.
 func CheckSystemDriveAndRemoveDriveLetter(path string) (string, error) {

vendor/github.com/moby/buildkit/util/system/path_windows.go

@@ -8,10 +8,6 @@ import (
 	"strings"
 )
 
-// DefaultPathEnv is deliberately empty on Windows as the default path will be set by
-// the container. Docker has no context of what the default path should be.
-const DefaultPathEnv = ""
-
 // CheckSystemDriveAndRemoveDriveLetter verifies and manipulates a Windows path.
 // This is used, for example, when validating a user provided path in docker cp.
 // If a drive letter is supplied, it must be the system drive. The drive letter