Update SeaweedFS and add outdated checks

packaging/alpine/local/seaweedfs/scripts/update-generated-sources.sh

@@ -1,15 +1,41 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-repo_root="${REPO_ROOT:-$(cd "$(dirname "${BASH_SOURCE[0]}")/../../../../.." && pwd)}"
 package_dir="${PACKAGE_DIR:-$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)}"
 configs=(credential filer master notification replication security shell)
+pkgver="$(
+  awk -F= '$1 == "pkgver" { print $2; exit }' "${package_dir}/APKBUILD"
+)"
+tmpdir="$(mktemp -d)"
+
+cleanup() {
+  rm -rf "${tmpdir}"
+}
+trap cleanup EXIT
+
+case "$(uname -m)" in
+  x86_64)
+    archive="linux_amd64.tar.gz"
+    ;;
+  aarch64|arm64)
+    archive="linux_arm64.tar.gz"
+    ;;
+  *)
+    printf 'unsupported host architecture for SeaweedFS generated sources: %s\n' "$(uname -m)" >&2
+    exit 2
+    ;;
+esac
+
+curl -fsSL \
+  -o "${tmpdir}/${archive}" \
+  "https://github.com/seaweedfs/seaweedfs/releases/download/${pkgver}/${archive}"
+tar -xzf "${tmpdir}/${archive}" -C "${tmpdir}" weed
 
 for config in "${configs[@]}"; do
-  "${repo_root}/bin/weed" scaffold -config "${config}" 2>/dev/null \
+  "${tmpdir}/weed" scaffold -config "${config}" 2>/dev/null \
     > "${package_dir}/example-${config}.toml"
 done
 
-"${repo_root}/bin/weed" autocomplete bash 2>/dev/null \
+"${tmpdir}/weed" autocomplete bash 2>/dev/null \
   | sed -E 's#complete -C "?[^"]*/weed"? weed#complete -C /usr/bin/weed weed#' \
     > "${package_dir}/weed.bash-completion"