Pull deps image on ARM when unchanged, add push retry

[harshavemula-ua]

Summary

• When forcingprocessor-deps hasn't changed, pull the existing image from Docker Hub instead of rebuilding from scratch on ARM
• Adds retry logic (3 attempts) to docker_loginNpush.sh to handle transient Docker daemon failures

Context

When only forcingprocessor version changed (not deps), the workflow deleted the deps build command from the ARM execution. But since forcingprocessor uses FROM awiciroh/forcingprocessor-deps as its base, docker compose rebuilt deps from scratch anyway on the fresh EC2 instance — taking ~1 hour and exhausting resources, causing the Docker socket EOF during push (run 22201325622).

Now the workflow substitutes the deps build with docker pull awiciroh/forcingprocessor-deps:latest-arm64 so the base image is available without rebuilding.

Files changed

• .github/workflows/build_push_fp.yaml — replace deps build delete with docker pull
• docker/docker_loginNpush.sh — retry logic for push failures

Test plan

• Re-run build_push_fp.yaml workflow with only fp version changed
• Verify ARM build pulls deps image instead of rebuilding
• Verify manifest creation step completes without errors

[Copilot]

Pull request overview

Updates the ARM build/push execution configuration and the Docker push helper script to improve reliability of image pushes and adjust ARM builder capacity.

Changes:

• Add retry logic (up to 3 attempts) to Docker image tag/push operations in docker_loginNpush.sh.
• Increase ARM EC2 instance type used by ARM push/test executions from t4g.large to m8g.xlarge.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
docker/docker_loginNpush.sh	Adds push retry loop for transient failures during tag/push operations.
.github/executions/fp_push_execution_arm.json	Bumps ARM builder instance size for push execution.
.github/executions/fp_ds_test_execution_arm.json	Bumps ARM builder instance size for DS test execution.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.