fix ./build-static.sh for consecutive builds #2446

Job	Run time
prepare	21s
build (php-8-2-28-alpine, linux/amd64)	5m 21s
build (php-8-2-28-alpine, linux/386)	4m 52s
build (php-8-2-28-alpine, linux/arm/v7)	4m 37s
build (php-8-2-28-alpine, linux/arm64)	4m 19s
build (php-8-2-28-bookworm, linux/amd64)	5m 11s
build (php-8-2-28-bookworm, linux/386)	5m 30s
build (php-8-2-28-bookworm, linux/arm/v7)	4m 53s
build (php-8-2-28-bookworm, linux/arm64)	5m 24s
build (php-8-3-20-alpine, linux/amd64)	6m 20s
build (php-8-3-20-alpine, linux/386)	4m 49s
build (php-8-3-20-alpine, linux/arm/v7)	5m 30s
build (php-8-3-20-alpine, linux/arm64)	4m 50s
build (php-8-3-20-bookworm, linux/amd64)	5m 38s
build (php-8-3-20-bookworm, linux/386)	4m 24s
build (php-8-3-20-bookworm, linux/arm/v7)	5m 1s
build (php-8-3-20-bookworm, linux/arm64)	5m 8s
build (php-8-4-6-alpine, linux/amd64)	5m 14s
build (php-8-4-6-alpine, linux/386)	4m 40s
build (php-8-4-6-alpine, linux/arm/v7)	5m 27s
build (php-8-4-6-alpine, linux/arm64)	5m 6s
build (php-8-4-6-bookworm, linux/amd64)	5m 56s
build (php-8-4-6-bookworm, linux/386)	4m 56s
build (php-8-4-6-bookworm, linux/arm/v7)	5m 57s
build (php-8-4-6-bookworm, linux/arm64)	5m 15s
push	0s
	2h 4m 39s

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