[lxd] minor fixups for new styles and docs

builder/lxd/builder.go

@@ -2,12 +2,11 @@ package lxd
 
 import (
 	"errors"
+	"github.com/hashicorp/packer/common"
+	"github.com/hashicorp/packer/packer"
+	"github.com/hashicorp/packer/template/interpolate"
 	"github.com/mitchellh/multistep"
-	"github.com/mitchellh/packer/common"
-	"github.com/mitchellh/packer/packer"
-	"github.com/mitchellh/packer/template/interpolate"
 	"log"
-	"runtime"
 )
 
 // The unique ID for this builder
@@ -33,10 +32,6 @@ func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
 }
 
 func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packer.Artifact, error) {
-	if runtime.GOOS != "linux" {
-		return nil, errors.New("The lxc builder only works on linux environments.")
-	}
-
 	wrappedCommand := func(command string) (string, error) {
 		b.config.ctx.Data = &wrappedCommandTemplate{Command: command}
 		return interpolate.Render(b.config.CommandWrapper, &b.config.ctx)
@@ -57,15 +52,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 	state.Put("wrappedCommand", CommandWrapper(wrappedCommand))
 
 	// Run
-	if b.config.PackerDebug {
-		b.runner = &multistep.DebugRunner{
-			Steps:   steps,
-			PauseFn: common.MultistepDebugFn(ui),
-		}
-	} else {
-		b.runner = &multistep.BasicRunner{Steps: steps}
-	}
-
+	b.runner = common.NewRunnerWithPauseFn(steps, b.config.PackerConfig, ui, state)
 	b.runner.Run(state)
 
 	// If there was an error, return that
@@ -73,15 +60,6 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		return nil, rawErr.(error)
 	}
 
-	// If we were interrupted or cancelled, then just exit.
-	if _, ok := state.GetOk(multistep.StateCancelled); ok {
-		return nil, errors.New("Build was cancelled.")
-	}
-
-	if _, ok := state.GetOk(multistep.StateHalted); ok {
-		return nil, errors.New("Build was halted.")
-	}
-
 	artifact := &Artifact{
 		id: state.Get("imageFingerprint").(string),
 	}

builder/lxd/communicator.go

@@ -71,7 +71,7 @@ func (c *Communicator) UploadDir(dst string, src string, exclude []string) error
 	// As a work around, we tar up the folder, upload it as a file, then extract it
 
 	// Don't use 'z' flag as compressing may take longer and the transfer is likely local.
-	// If this isn't the case, it is possible for the user to crompress in another step then transfer.
+	// If this isn't the case, it is possible for the user to compress in another step then transfer.
 	// It wouldn't be possibe to disable compression, without exposing this option.
 	tar, err := c.CmdWrapper(fmt.Sprintf("tar -cf - -C %s .", src))
 	if err != nil {

website/source/docs/builders/lxd.html.md

@@ -46,5 +46,7 @@ Below is a fully functioning example.
 
 -  `name` (string) - The name of the started container. Defaults to `packer-$PACKER_BUILD_NAME`.
 
--  `output_image` (string) - The name of the output artifact. Defaults to `name`
+-  `output_image` (string) - The name of the output artifact. Defaults to `name`.
+
+-  `command_wrapper` (string) - lets you prefix all builder commands, such as with `ssh` for a remote build host. Defaults to `""`.