@@ -16,7 +16,6 @@ const (

 	Expose     = "expose"

 	Volume     = "volume"

 	User       = "user"

-	Insert     = "insert"

 )

 // Commands is list of all Dockerfile commands

@@ -35,5 +34,4 @@ var Commands = map[string]struct{}{

 	Expose:     {},

 	Volume:     {},

 	User:       {},

-	Insert:     {},

 }

@@ -512,8 +512,3 @@ func volume(b *Builder, args []string, attributes map[string]bool, original stri

 	}

 	return nil

 }

-

-// INSERT is no longer accepted, but we still parse it.

-func insert(b *Builder, args []string, attributes map[string]bool, original string) error {

-	return fmt.Errorf("INSERT has been deprecated. Please use ADD instead")

-}

@@ -71,7 +71,6 @@ func init() {

 		command.Expose:     expose,

 		command.Volume:     volume,

 		command.User:       user,

-		command.Insert:     insert,

 	}

 }

@@ -61,7 +61,6 @@ func init() {

 		command.Entrypoint: parseMaybeJSON,

 		command.Expose:     parseStringsWhitespaceDelimited,

 		command.Volume:     parseMaybeJSONToList,

-		command.Insert:     parseIgnore,

 	}

 }