#694 fix: app spec merges image and pod template Pull request opened by cosmicBboy This pull request updates the pod specification serialization logic to improve how container images are determined and merged, especially when using a pod template. It ensures the primary container's image is set appropriately based on

app_env.image

, and adds comprehensive tests to verify this behavior. Improvements to container image resolution: • Updated

_serialized_pod_spec

in

src/flyte/app/_runtime/app_serde.py

to merge

app_env.image

into the primary container if its image is not set, supporting

"auto"

and explicit image values, while preserving explicit container images. Testing enhancements: • Added three new tests to `tests/flyte/app/runtime/test_app_serde.py`: • Test that the primary container inherits

app_env.image

when no image is set in the pod template. • Test that an explicit image in the pod template's primary container is not overwritten by

app_env.image

. • Test that

app_env.image="auto"

results in a default image for the primary container when no image is set. flyteorg/flyte-sdk