Update 'src/isolate.bash'

src/isolate.bash

@@ -56,10 +56,20 @@ function app::dlt::isolate() {
         tar xf "../to_image/${raw_layer}"
     done
 
-    # Create a tarball w/ the isolated files (special find magic to avoid the leading ./ on paths)
+    # DOCKER BACKGROUND: When you export an image layer to a tarball, Docker creates
+    # special "whiteout" placeholder files to represent files that were deleted in that
+    # layer. These files are prefixed with `.wh.`.
+    # Due to our shenanigans, we need to handle these manually since we're importing the
+    # tarball directly in as a single image, so the whiteout files are ever removed.
+    # Instead, let's extract them to a list so we can rm them manually during the build step.
+    g::info 'Building white-out list'
+    find . -name '.wh.*' > ../whiteout.list
+    xargs -a ../whiteout.list rm -f
+
+    # Create a tarball w/ the isolated files
     g::info 'Creating archive'
+    tar cf ../isolated.tar .
     cd ..
-    find isolated/ \( -type f -o -type d \) -printf "%P\n" | tar cf isolated.tar -C isolated/ -T -
 
     # Do a bit of cleanup
     rm -rf to_image from_image isolated
@@ -72,7 +82,7 @@ function app::dlt::isolate() {
             docker image import isolated.tar "$as_image" > /dev/null
         else
             g::info "Creating image $as_image on top of $from_image"
-            dkr::import_fs_as_layer isolated.tar "$from_image" "$as_image"
+            dkr::import_fs_as_layer isolated.tar "$from_image" "$as_image" whiteout.list
         fi
     fi