Add comments to image spec definition

first-project/{{cookiecutter.project_name}}/src/tasks/tasks.py

@@ -3,8 +3,26 @@
 import union
 
 image_spec = union.ImageSpec(
+
+    # The name of the image.
     name="first-project-image",
+
+    # Use the `uv.lock` file in this project to define the dependencies included in the image.
     requirements="uv.lock",
+
+    # 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>"
 )
 
 @union.task(container_image=image_spec)