hid: implemented image mount/unmount

config/config.go

@@ -2,16 +2,9 @@ package config
 
 import (
 	"fmt"
-	"os"
 	"strings"
 )
 
-var RootFS string
-
-func init() {
-	RootFS = os.Getenv("ROOT_FS")
-}
-
 type Config struct {
 	LogLevel   string    `yaml:"log_level"`
 	Auth       bool      `yaml:"auth"`