feat: Support Alpine #1566

Job	Run time
php-cs	26s
test-alpine (amd64)	22s
unit (8.1, lowest)	24s
test-alpine (arm64)	1m 28s
unit (8.1, locked)	24s
examples (ubuntu-latest, 8.1)	33s
unit (8.2, lowest)	28s
examples (macos-12, 8.3)	2m 1s
unit (8.2, locked)	19s
examples (macos-14, 8.2)	1m 41s
examples (windows-latest, json, 8.2)	55s
unit (8.3, lowest)	28s
examples (windows-latest, binary, 8.2)	43s
unit (8.3, locked)	23s
examples (windows-latest, multipart, 8.2)	55s
examples (windows-latest, xml, 8.2)	44s
examples (windows-latest, message, 8.2)	1m 4s
examples (windows-latest, matchers, 8.2)	53s
examples (windows-latest, generators, 8.2)	54s
examples (windows-latest, csv, 8.2)	1m 15s
examples (windows-latest, protobuf-sync-message, 8.1)	2m 34s
examples (windows-latest, protobuf-async-message, 8.2)	1m 12s
examples (windows-latest, stub-server, 8.2)	52s
finish	9s
	21m 7s

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