builder/docker: artifact

builder/docker/artifact_export.go

+package docker
+
+import (
+	"fmt"
+	"os"
+)
+
+// ExportArtifact is an Artifact implementation for when a container is
+// exported from docker into a single flat file.
+type ExportArtifact struct {
+	path string
+}
+
+func (*ExportArtifact) BuilderId() string {
+	return BuilderId
+}
+
+func (a *ExportArtifact) Files() []string {
+	return []string{a.path}
+}
+
+func (*ExportArtifact) Id() string {
+	return "Container"
+}
+
+func (a *ExportArtifact) String() string {
+	return fmt.Sprintf("Exported Docker file: %s", a.path)
+}
+
+func (a *ExportArtifact) Destroy() error {
+	return os.Remove(a.path)
+}

builder/docker/artifact_export_test.go

+package docker
+
+import (
+	"github.com/mitchellh/packer/packer"
+	"testing"
+)
+
+func TestExportArtifact_impl(t *testing.T) {
+	var _ packer.Artifact = new(ExportArtifact)
+}

builder/docker/builder.go

@@ -78,7 +78,9 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		return nil, rawErr.(error)
 	}
 
-	return nil, nil
+	// No errors, must've worked
+	artifact := &ExportArtifact{path: b.config.ExportPath}
+	return artifact, nil
 }
 
 func (b *Builder) Cancel() {