From 347d835781c2a0c8e6a3ad03696b2ebd9f6e6576 Mon Sep 17 00:00:00 2001
From: dlorenc <lorenc.d@gmail.com>
Date: Tue, 15 May 2018 15:32:27 -0700
Subject: [PATCH] Add a mode to save to a tarball instead of pushing. (#178)

---
 cmd/executor/cmd/root.go |  4 +++-
 pkg/executor/executor.go | 15 +++++++++++----
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/cmd/executor/cmd/root.go b/cmd/executor/cmd/root.go
index bbfeb0102..63e42831d 100644
--- a/cmd/executor/cmd/root.go
+++ b/cmd/executor/cmd/root.go
@@ -39,6 +39,7 @@ var (
 	logLevel                    string
 	force                       bool
 	buildArgs                   buildArg
+	tarPath                     string
 )
 
 func init() {
@@ -52,6 +53,7 @@ func init() {
 	RootCmd.PersistentFlags().BoolVarP(&dockerInsecureSkipTLSVerify, "insecure-skip-tls-verify", "", false, "Push to insecure registry ignoring TLS verify")
 	RootCmd.PersistentFlags().StringVarP(&logLevel, "verbosity", "v", constants.DefaultLogLevel, "Log level (debug, info, warn, error, fatal, panic")
 	RootCmd.PersistentFlags().BoolVarP(&force, "force", "", false, "Force building outside of a container")
+	RootCmd.PersistentFlags().StringVarP(&tarPath, "tarPath", "", "", "Path to save the image in as a tarball instead of pushing")
 }
 
 var RootCmd = &cobra.Command{
@@ -82,7 +84,7 @@ var RootCmd = &cobra.Command{
 			logrus.Error(err)
 			os.Exit(1)
 		}
-		if err := executor.DoPush(ref, image, destination); err != nil {
+		if err := executor.DoPush(ref, image, destination, tarPath); err != nil {
 			logrus.Error(err)
 			os.Exit(1)
 		}
diff --git a/pkg/executor/executor.go b/pkg/executor/executor.go
index e8a3908f0..b3c697859 100644
--- a/pkg/executor/executor.go
+++ b/pkg/executor/executor.go
@@ -19,13 +19,14 @@ package executor
 import (
 	"bytes"
 	"fmt"
-	"github.com/GoogleContainerTools/kaniko/pkg/snapshot"
 	"io"
 	"net/http"
 	"os"
 	"path/filepath"
 	"strconv"
 
+	"github.com/GoogleContainerTools/kaniko/pkg/snapshot"
+
 	"github.com/google/go-containerregistry/v1/empty"
 
 	"github.com/google/go-containerregistry/v1/tarball"
@@ -36,13 +37,14 @@ import (
 	"github.com/google/go-containerregistry/v1/mutate"
 	"github.com/google/go-containerregistry/v1/remote"
 
+	"io/ioutil"
+
 	"github.com/GoogleContainerTools/kaniko/pkg/commands"
 	"github.com/GoogleContainerTools/kaniko/pkg/constants"
 	"github.com/GoogleContainerTools/kaniko/pkg/dockerfile"
 	"github.com/GoogleContainerTools/kaniko/pkg/util"
 	"github.com/docker/docker/builder/dockerfile/instructions"
 	"github.com/sirupsen/logrus"
-	"io/ioutil"
 )
 
 func DoBuild(dockerfilePath, srcContext, snapshotMode string, args []string) (name.Reference, v1.Image, error) {
@@ -168,12 +170,17 @@ func DoBuild(dockerfilePath, srcContext, snapshotMode string, args []string) (na
 	return nil, nil, err
 }
 
-func DoPush(ref name.Reference, image v1.Image, destination string) error {
+func DoPush(ref name.Reference, image v1.Image, destination, tarPath string) error {
 	// Push the image
-	destRef, err := name.ParseReference(destination, name.WeakValidation)
+	destRef, err := name.NewTag(destination, name.WeakValidation)
 	if err != nil {
 		return err
 	}
+
+	if tarPath != "" {
+		return tarball.WriteToFile(tarPath, destRef, image, nil)
+	}
+
 	wo := remote.WriteOptions{}
 	if ref != nil {
 		wo.MountPaths = []name.Repository{ref.Context()}