[Soner (shyim)]

…on builds, updating CI to use them.

[Copilot]

Pull request overview

This PR introduces a comprehensive Docker-based build system for compiling the Shopware PHP extension across multiple PHP versions, CPU architectures, and libc implementations. It replaces the previous simple build workflow with a matrix-based approach supporting 16 build combinations (4 PHP versions × 2 libc types × 2 CPU architectures).

Key changes:

• Adds two separate Dockerfiles (gnu/musl) optimized for different libc implementations with multi-stage builds
• Introduces a local build script for developer convenience
• Replaces the single-configuration GitHub Actions workflow with a comprehensive matrix build strategy

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 9 comments.

File	Description
build-docker.sh	Local build script to generate extension binaries for multiple PHP versions and libc types
Dockerfile.musl	Multi-stage Dockerfile for building the extension on Alpine Linux (musl libc) with Rust and required dependencies
Dockerfile.gnu	Multi-stage Dockerfile for building the extension on Debian (glibc) with Rust and required dependencies
.github/workflows/build.yml	Updated CI workflow from single build to 16-variant matrix build covering PHP 8.1-8.4, gnu/musl, and x86_64/aarch64

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[Copilot]

The comment incorrectly refers to 'main.rs' when it should say 'lib.rs', as shown in the actual command on line 32.

Suggested change

	# Create a dummy main.rs to build dependencies and cache them
	# Create a dummy lib.rs to build dependencies and cache them