diff --git a/union-hello-world/{{cookiecutter.project_name}}/workflows/hello-world.py b/union-hello-world/{{cookiecutter.project_name}}/workflows/hello-world.py
index 2dfa42a..e4bf44a 100644
--- a/union-hello-world/{{cookiecutter.project_name}}/workflows/hello-world.py
+++ b/union-hello-world/{{cookiecutter.project_name}}/workflows/hello-world.py
@@ -2,25 +2,14 @@
 
 image_spec = union.ImageSpec(
 
-    # The name of the image.
-    name="hello-world-image",
+    # Build the image using Union's built-in cloud builder (not locally on your machine)
+    builder="union",
 
-    # Use the `uv.lock` file in this project to define the dependencies included in the image.
-    requirements="uv.lock",
+    # The name of the image.
+    name="union-hello-world-image",
 
-    # The container registry to which the image will be pushed.
-    # Only used for Union BYOC. Not used for Union Serverless
-    # Uncomment this parameter if you are using Union BYOC.:
-    #
-    # * Substitute the actual name of the registry for <my-registry>.
-    #   (for example if you are using GitHub's GHCR, you would use "ghcr.io/<my-github-org>").
-    #
-    # * Make sure you have Docker installed locally and are logged into that registry.
-    #
-    # * Make sure that the image, once pushed to the registry, is accessible to Union
-    #   (for example, for GHCR, make sure the image is public).
-    #
-    # registry="<my-registry>"
+    # List of packages to install on the image
+    packages=-["union"],
 )
 
 @union.task(container_image=image_spec)
diff --git a/union-standard/{{cookiecutter.project_name}}/src/tasks/tasks.py b/union-standard/{{cookiecutter.project_name}}/src/tasks/tasks.py
index 4c486f5..d38c6de 100644
--- a/union-standard/{{cookiecutter.project_name}}/src/tasks/tasks.py
+++ b/union-standard/{{cookiecutter.project_name}}/src/tasks/tasks.py
@@ -4,25 +4,14 @@
 
 image_spec = union.ImageSpec(
 
-    # The name of the image.
-    name="standard-image",
+    # Build the image using Union's built-in cloud builder (not locally on your machine)
+    builder="union",
 
-    # Use the `uv.lock` file in this project to define the dependencies included in the image.
-    requirements="uv.lock",
+    # The name of the image.
+    name="union-standard-image",
 
-    # The container registry to which the image will be pushed.
-    # Only used for Union BYOC. Not used for Union Serverless
-    # Uncomment this parameter if you are using Union BYOC.:
-    #
-    # * Substitute the actual name of the registry for <my-registry>.
-    #   (for example if you are using GitHub's GHCR, you would use "ghcr.io/<my-github-org>").
-    #
-    # * Make sure you have Docker installed locally and are logged into that registry.
-    #
-    # * Make sure that the image, once pushed to the registry, is accessible to Union
-    #   (for example, for GHCR, make sure the image is public).
-    #
-    # registry="<my-registry>"
+    # List of packages to install on the image
+    packages=-["union"],
 )
 
 @union.task(container_image=image_spec)