build: unify Node 24 and upgrade release flow

docker/install-node-debian.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+set -eu
+
+# The official Node 24 Bookworm image does not cover s390x. Use the same
+# verified upstream release archive on every supported Debian architecture.
+version=24.18.1
+case "${1:?Missing Docker TARGETARCH}" in
+  amd64) arch=x64; checksum=d6c664df3f3f61458e8c277585571328522d705166723a7c7823a9253a4d15a0 ;;
+  arm64) arch=arm64; checksum=7201e3a09dc825bac57867c81913e2b8f0ef87d04cb9082af4cda82f6ff3d88c ;;
+  ppc64le) arch=ppc64le; checksum=c47812c13862be7f6e71194c434c4d78a99096e72efb9c31a2627437e056d669 ;;
+  s390x) arch=s390x; checksum=acf57bd726f35afc2ba8475194e5a8bd532c00e1a3b2436295b2fbdde199d0e9 ;;
+  *) echo "Node ${version} has no supported Debian binary for TARGETARCH=$1" >&2; exit 1 ;;
+esac
+
+archive="node-v${version}-linux-${arch}.tar.xz"
+curl --fail --location --silent --show-error --retry 3 \
+  "https://nodejs.org/dist/v${version}/${archive}" -o "/tmp/${archive}"
+printf '%s  %s\n' "${checksum}" "/tmp/${archive}" | sha256sum --check --status
+tar -xJf "/tmp/${archive}" -C /usr/local --strip-components=1 --no-same-owner
+rm "/tmp/${archive}"
+# The target binary is executed and version-checked in the target builder/runtime stages.
+test -x /usr/local/bin/node