feat: upgrade static-php-cli submodule to v2.7.5

Update the static-php-cli submodule from commit 4c55f4a2 to v2.7.5 (c5ae719b).

Changes made to adapt to v2.7.5:
- Replace legacy Docker build script approach with spc-alpine-docker tool.
- Add ext/craft.yml to configure PHP extensions (curl, filter, openssl, pcntl, phar, posix, zlib).
- Update Makefile to use new build command via spc-alpine-docker.

The new version uses a unified craft.yml configuration format and bin/spc tool
instead of the legacy docker/ directory with manual build scripts.

Co-Authored-By: Claude <[email protected]>

Author: pjcdawkins

Dockerfile.php

@@ -37,16 +37,9 @@ internal/legacy/archives/php_darwin_$(GOARCH):
 	rm -rf $(GOOS)
 
 internal/legacy/archives/php_linux_$(GOARCH):
-	cp ext/extensions.txt ext/static-php-cli/docker
-	docker buildx build \
-		--build-arg GOARCH=$(GOARCH) \
-		--build-arg PHP_VERSION=$(PHP_VERSION) \
-		--build-arg USE_BACKUP_ADDRESS=yes \
-		--file=./Dockerfile.php \
-		--platform=linux/$(GOARCH) \
-		--output=type=local,dest=./internal/legacy/archives/ \
-		--progress=plain \
-		ext/static-php-cli/docker
+	mkdir -p internal/legacy/archives
+	cd ext/static-php-cli && SPC_USE_ARCH=$(GOARCH) ./bin/spc-alpine-docker build curl,filter,openssl,pcntl,phar,posix,zlib --build-cli --with-php=$(PHP_VERSION)
+	cp ext/static-php-cli/buildroot/bin/php $(PHP_BINARY_PATH)
 
 PHP_WINDOWS_REMOTE_FILENAME := "php-$(PHP_VERSION)-nts-Win32-vs16-x64.zip"
 internal/legacy/archives/php_windows.zip:

Makefile

@@ -0,0 +1,33 @@
+# craft.yml configuration for building PHP CLI for Upsun CLI
+# This file configures static-php-cli v2.7.5+ to build a minimal PHP binary
+
+php-version: "8.2"
+
+extensions:
+  - curl
+  - filter
+  - openssl
+  - pcntl
+  - phar
+  - posix
+  - zlib
+
+libs: []
+
+sapi:
+  - cli
+
+build-options:
+  with-clean: false
+  with-suggested-libs: false
+  with-upx-pack: true
+  with-strip-php: true
+
+download-options:
+  prefer-pre-built: true
+  retry: 5
+
+craft-options:
+  doctor: true
+  download: true
+  build: true