builder/amazon/chroot: rename to builder-amazon-chroot

builder/amazon/chroot/builder.go

@@ -69,7 +69,9 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 	state["ui"] = ui
 
 	// Build the steps
-	steps := []multistep.Step{}
+	steps := []multistep.Step{
+		&StepCheckEC2{},
+	}
 
 	// Run!
 	if b.config.PackerDebug {

builder/amazon/chroot/step_check_ec2.go

@@ -0,0 +1,16 @@
+package chroot
+
+import (
+	"github.com/mitchellh/multistep"
+	"github.com/mitchellh/packer/packer"
+)
+
+type StepCheckEC2 struct{}
+
+func (s *StepCheckEC2) Run(state map[string]interface{}) multistep.StepAction {
+	ui := state["ui"].(packer.Ui)
+	ui.Say("Verifying we're on an EC2 instance...")
+	return multistep.ActionContinue
+}
+
+func (s *StepCheckEC2) Cleanup(map[string]interface{}) {}

config.go

@@ -20,6 +20,7 @@ const defaultConfig = `
 
 	"builders": {
 		"amazon-ebs": "packer-builder-amazon-ebs",
+		"amazon-chroot": "packer-builder-amazon-chroot",
 		"amazon-instance": "packer-builder-amazon-instance",
 		"digitalocean": "packer-builder-digitalocean",
 		"virtualbox": "packer-builder-virtualbox",