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	// CopyAs is a concrete build instruction for copying source			// CopyAs is a concrete build instruction for copying source
	// files/directories and setting their ownership to the given UID/GID.			// files/directories and setting their ownership to the given UID/GID.
	//			//
	type CopyAs struct {			type CopyAs struct {
	UID uint // owner UID			UID uint // owner UID
	GID uint // owner GID			GID uint // owner GID
	Copy			Copy
				CopyFrom
	}			}

	// Compile returns the variant name unquoted and all quoted CopyAs instruction			// Compile returns the variant name unquoted and all quoted CopyAs instruction
	// fields.			// fields.
	//			//
	func (ca CopyAs) Compile() []string {			func (ca CopyAs) Compile() []string {
	return append([]string{fmt.Sprintf("%d:%d", ca.UID, ca.GID)}, ca.Copy.Compile()...)			var copy Instruction

				if ca.CopyFrom.From != "" {
				copy = ca.CopyFrom
				} else {
				copy = ca.Copy
				}

				return append([]string{fmt.Sprintf("%d:%d", ca.UID, ca.GID)}, copy.Compile()...)
	}			}

	// CopyFrom is a concrete build instruction for copying source			// CopyFrom is a concrete build instruction for copying source
	// files/directories from one variant image to another.			// files/directories from one variant image to another.
	//			//
	type CopyFrom struct {			type CopyFrom struct {
	From string // source variant name			From string // source variant name
	Copy			Copy
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