Add support for insecure docker registry (#131)

* Add support for insecure docker registry

Using --insecure-skip-tls-verify

Fixes #110

* Apply formatting

cmd/executor/cmd/root.go

@@ -32,13 +32,14 @@ import (
 )
 
 var (
-	dockerfilePath string
-	destination    string
-	srcContext     string
-	snapshotMode   string
-	bucket         string
-	logLevel       string
-	force          bool
+	dockerfilePath              string
+	destination                 string
+	srcContext                  string
+	snapshotMode                string
+	bucket                      string
+	dockerInsecureSkipTLSVerify bool
+	logLevel                    string
+	force                       bool
 )
 
 func init() {
@@ -47,6 +48,7 @@ func init() {
 	RootCmd.PersistentFlags().StringVarP(&bucket, "bucket", "b", "", "Name of the GCS bucket from which to access build context as tarball.")
 	RootCmd.PersistentFlags().StringVarP(&destination, "destination", "d", "", "Registry the final image should be pushed to (ex: gcr.io/test/example:latest)")
 	RootCmd.PersistentFlags().StringVarP(&snapshotMode, "snapshotMode", "", "full", "Set this flag to change the file attributes inspected during snapshotting")
+	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")
 }
@@ -70,7 +72,7 @@ var RootCmd = &cobra.Command{
 			}
 			logrus.Warn("kaniko is being run outside of a container. This can have dangerous effects on your system")
 		}
-		if err := executor.DoBuild(dockerfilePath, srcContext, destination, snapshotMode); err != nil {
+		if err := executor.DoBuild(dockerfilePath, srcContext, destination, snapshotMode, dockerInsecureSkipTLSVerify); err != nil {
 			logrus.Error(err)
 			os.Exit(1)
 		}

pkg/executor/executor.go

@@ -32,7 +32,7 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func DoBuild(dockerfilePath, srcContext, destination, snapshotMode string) error {
+func DoBuild(dockerfilePath, srcContext, destination, snapshotMode string, dockerInsecureSkipTLSVerify bool) error {
 	// Parse dockerfile and unpack base image to root
 	d, err := ioutil.ReadFile(dockerfilePath)
 	if err != nil {
@@ -113,7 +113,7 @@ func DoBuild(dockerfilePath, srcContext, destination, snapshotMode string) error
 	if err := setDefaultEnv(); err != nil {
 		return err
 	}
-	return image.PushImage(sourceImage, destination)
+	return image.PushImage(sourceImage, destination, dockerInsecureSkipTLSVerify)
 }
 
 func getHasher(snapshotMode string) (func(string) (string, error), error) {

pkg/image/image.go

@@ -48,7 +48,7 @@ func NewSourceImage(srcImg string) (*img.MutableSource, error) {
 }
 
 // PushImage pushes the final image
-func PushImage(ms *img.MutableSource, destImg string) error {
+func PushImage(ms *img.MutableSource, destImg string, dockerInsecureSkipTLSVerify bool) error {
 	srcRef := &img.ProxyReference{
 		ImageReference: nil,
 		Src:            ms,
@@ -65,7 +65,8 @@ func PushImage(ms *img.MutableSource, destImg string) error {
 
 	opts := &copy.Options{
 		DestinationCtx: &types.SystemContext{
-			DockerRegistryUserAgent: fmt.Sprintf("kaniko/executor-%s", version.Version()),
+			DockerRegistryUserAgent:     fmt.Sprintf("kaniko/executor-%s", version.Version()),
+			DockerInsecureSkipTLSVerify: dockerInsecureSkipTLSVerify,
 		},
 	}
 	return copy.Image(policyContext, destRef, srcRef, opts)