check: move from container

This package is not container specific, and widely used across the project.

Signed-off-by: Ophestra <cat@gensokyo.uk>

container/fhs/abs.go

@@ -3,14 +3,14 @@ package fhs
 import (
 	_ "unsafe" // for go:linkname
 
-	"hakurei.app/container/check"
+	"hakurei.app/check"
 )
 
 /* constants in this file bypass abs check, be extremely careful when changing them! */
 
 // unsafeAbs returns check.Absolute on any string value.
 //
-//go:linkname unsafeAbs hakurei.app/container/check.unsafeAbs
+//go:linkname unsafeAbs hakurei.app/check.unsafeAbs
 func unsafeAbs(pathname string) *check.Absolute
 
 var (