remove gRPC PHP extension from build

[ma-04]

Summary

The gRPC PHP extension is currently causing significant delays during the build process. Installing the extension via pecl install grpc takes a long time and produces very large binaries, which negatively impacts CI build times.

Several upstream issues indicate that this is a known problem with the gRPC PHP extension build process.

Details;
https://github.com/ma-04/flywp-dockerfiles/actions/runs/23083888353/job/67057476647

References

• PHP: pecl install is still slow and still produces massive binaries grpc/grpc#34278
• [php]: add with-grpc-dir to configure and pkg-config support grpc/grpc#35404
• pecl install is slow and produces massive (55Mb) binary grpc/grpc#23626
• https://stackoverflow.com/questions/69134390/docker-container-fails-to-build-when-installing-grpc

Problem

• install-php-extensions install grpc significantly increases CI build time.
• This negatively affects developer productivity and CI efficiency.

Temporary Solution

This PR removes the gRPC PHP extension from the build to avoid the slow installation during CI.

Future Improvements

We can reintroduce gRPC once we implement one of the following:

• GitHub Actions caching for compiled extensions
• Prebuilt PHP extensions in the base Docker image
• Use the new pkg-config / with-grpc-dir support once it becomes stable upstream

Impact

• Faster CI builds
• Smaller Docker image layers
• No functional impact if gRPC is not currently required

Notes

If gRPC functionality becomes required in the future, we should revisit this and implement a proper caching or prebuilt extension strategy.

Fixes; https://github.com/flywp/issues/issues/435

Summary by CodeRabbit

• Chores
  • Minor formatting update to build configuration.

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Note: This release contains no functional changes or new features visible to end-users.

[coderabbitai]

Walkthrough

A blank line is added after the install-php-extensions command in the PHP Dockerfile, resulting in no functional changes to the image build process or configuration.

Changes

Cohort / File(s)	Summary
PHP Dockerfile Formatting php/Dockerfile	Added blank line after install-php-extensions command for improved spacing.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~1 minute

Poem

🐰 A space so small, yet clean and bright,
Between the lines, the formatting's right,
One blank line added with care,
A Docker file breathing fresh air! ✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The PR title claims to remove the gRPC PHP extension, but the diff only adds a blank line to the Dockerfile with no functional changes.	The title does not match the actual changes in the diff. Verify whether the gRPC extension was actually removed from the Dockerfile, or update the title to reflect the minimal whitespace-only change being made.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[ma-04]