force push an image

cli/cmd/apply.go

@@ -173,6 +173,7 @@ type ApplicationConfig struct {
 
 	Build struct {
 		ForceBuild bool
+		ForcePush  bool
 		Method     string
 		Context    string
 		Dockerfile string
@@ -506,7 +507,7 @@ func (d *Driver) updateApplication(resource *models.Resource, client *api.Client
 			return nil, err
 		}
 
-		err = updateAgent.Push()
+		err = updateAgent.Push(appConf.Build.ForcePush)
 
 		if err != nil {
 			return nil, err

cli/cmd/deploy.go

@@ -206,6 +206,7 @@ var dockerfile string
 var method string
 var stream bool
 var buildFlagsEnv []string
+var forcePush bool
 
 func init() {
 	buildFlagsEnv = []string{}
@@ -288,6 +289,20 @@ func init() {
 		"stream update logs to porter dashboard",
 	)
 
+	updateCmd.PersistentFlags().BoolVar(
+		&forceBuild,
+		"force-build",
+		false,
+		"set this to force build an image (only works on images that are not tagged with \"latest\")",
+	)
+
+	updateCmd.PersistentFlags().BoolVar(
+		&forcePush,
+		"force-push",
+		false,
+		"set this to force push an image (only works on images that are not tagged with \"latest\")",
+	)
+
 	updateCmd.AddCommand(updateGetEnvCmd)
 
 	updateGetEnvCmd.PersistentFlags().StringVar(
@@ -297,13 +312,6 @@ func init() {
 		"file destination for .env files",
 	)
 
-	updateCmd.PersistentFlags().BoolVar(
-		&forceBuild,
-		"force-build",
-		false,
-		"set this to force build an image",
-	)
-
 	updateCmd.AddCommand(updateBuildCmd)
 	updateCmd.AddCommand(updatePushCmd)
 	updateCmd.AddCommand(updateConfigCmd)
@@ -523,7 +531,7 @@ func updatePushWithAgent(updateAgent *deploy.DeployAgent) error {
 		})
 	}
 
-	if err := updateAgent.Push(); err != nil {
+	if err := updateAgent.Push(forcePush); err != nil {
 		if stream {
 			updateAgent.StreamEvent(types.SubEvent{
 				EventID: "push",

cli/cmd/deploy/deploy.go

@@ -323,8 +323,12 @@ func (d *DeployAgent) Build(overrideBuildConfig *types.BuildConfig, forceBuild b
 }
 
 // Push pushes a local image to the remote repository linked in the release
-func (d *DeployAgent) Push() error {
-	return d.agent.PushImage(fmt.Sprintf("%s:%s", d.imageRepo, d.tag))
+func (d *DeployAgent) Push(forcePush bool) error {
+	if forcePush || d.tag == "latest" {
+		return d.agent.PushImage(fmt.Sprintf("%s:%s", d.imageRepo, d.tag))
+	}
+
+	return nil
 }
 
 // UpdateImageAndValues updates the current image for a release, along with new