chown app directory after upload

Due to setting the uid,gid on upload this was fixed for files, but NOT
directories. We now force a "chown" after the upload

[#31]

acceptance/testdata/node_app/mydir/myfile.txt

@@ -0,0 +1 @@
+file in subdir

build.go

@@ -154,6 +154,10 @@ func (b *BuildFlags) Detect() (*lifecycle.BuildpackGroup, error) {
  return nil, errors.Wrap(err, "copy app to workspace volume")
  }
 
+ if err := b.chownDir("/workspace/app", uid, gid); err != nil {
+ return nil, errors.Wrap(err, "chown app to workspace volume")
+ }
+
  if err := b.Cli.RunContainer(ctx, ctr.ID, b.Stdout, b.Stderr); err != nil {
  return nil, errors.Wrap(err, "run detect container")
  }
@@ -325,6 +329,27 @@ func (b *BuildFlags) packUidGid(builder string) (int, int, error) {
  return uid, gid, nil
 }
 
+func (b *BuildFlags) chownDir(path string, uid, gid int) error {
+ ctx := context.Background()
+ ctr, err := b.Cli.ContainerCreate(ctx, &container.Config{
+ Image: b.Builder,
+ Cmd: []string{"chown", "-R", fmt.Sprintf("%d:%d", uid, gid), path},
+ User: "root",
+ }, &container.HostConfig{
+ Binds: []string{
+ b.WorkspaceVolume + ":/workspace",
+ },
+ }, nil, "")
+ if err != nil {
+ return err
+ }
+ defer b.Cli.ContainerRemove(ctx, ctr.ID, dockertypes.ContainerRemoveOptions{})
+ if err := b.Cli.RunContainer(ctx, ctr.ID, b.Stdout, b.Stderr); err != nil {
+ return err
+ }
+ return nil
+}
+
 func (b *BuildFlags) exportVolume(image, volName string) (string, func(), error) {
  ctx := context.Background()
  ctr, err := b.Cli.ContainerCreate(ctx, &container.Config{

build_test.go

@@ -59,11 +59,11 @@ func testBuild(t *testing.T, when spec.G, it spec.S) {
  })
 
  when("#Detect", func() {
- it("copies the app in to docker and chowns it", func() {
+ it("copies the app in to docker and chowns it (including directories)", func() {
  _, err := subject.Detect()
  assertNil(t, err)
 
- for _, name := range []string{"/workspace/app", "/workspace/app/app.js"} {
+ for _, name := range []string{"/workspace/app", "/workspace/app/app.js", "/workspace/app/mydir", "/workspace/app/mydir/myfile.txt"} {
  txt, err := exec.Command("docker", "run", "-v", subject.WorkspaceVolume+":/workspace", subject.Builder, "ls", "-ld", name).Output()
  assertNil(t, err)
  assertContains(t, string(txt), "pack pack")