ci: skip Alpine builds already published

scripts/apk/ci-build.sh

@@ -10,6 +10,7 @@ arches="${ALPINE_ARCHES:-x86_64 aarch64}"
 packager="${PACKAGER:-local}"
 selected_packages="${ALPINE_PACKAGE:-${ALPINE_PACKAGES:-}}"
 skip_build="${ALPINE_SKIP_BUILD:-0}"
+rust_cache_root="${ALPINE_RUST_CACHE_ROOT:-}"
 
 if [[ "${skip_build}" == "1" ]]; then
   printf 'Skipping package build: restored package cache is complete\n'
@@ -24,7 +25,7 @@ if [[ "${1:-}" != "--as-builder" && "$(id -u)" == "0" ]]; then
   printf 'permit nopass :wheel\n' > /etc/doas.d/wheel.conf
   printf '%%wheel ALL=(ALL) NOPASSWD: ALL\n' > /etc/sudoers.d/wheel
   chown -R builder:builder "${repo_root}"
-  exec su builder -c "ALPINE_ARCHES='${arches}' ALPINE_REPO_NAME='${repo_name}' ALPINE_PACKAGES='${selected_packages}' PACKAGER='${packager}' '${BASH_SOURCE[0]}' --as-builder"
+  exec su builder -c "ALPINE_ARCHES='${arches}' ALPINE_REPO_NAME='${repo_name}' ALPINE_PACKAGES='${selected_packages}' PACKAGER='${packager}' ALPINE_RUST_CACHE_ROOT='${rust_cache_root}' '${BASH_SOURCE[0]}' --as-builder"
 fi
 
 export PACKAGER="${packager}"
@@ -72,6 +73,21 @@ while IFS= read -r package_dir; do
 
     printf 'Building %s for %s\n' "$(basename "${package_dir}")" "${arch}"
     (
+      package_name="$(apk_package_name "${package_dir}")"
+      if [[ -n "${rust_cache_root}" ]]; then
+        case "${package_name}" in
+          greptimedb)
+            export CARGO_HOME="${rust_cache_root}/greptimedb/cargo"
+            export RUSTUP_HOME="${rust_cache_root}/greptimedb/rustup"
+            export CARGO_TARGET_DIR="${rust_cache_root}/greptimedb/target"
+            ;;
+          seaweedfs)
+            export CARGO_HOME="${rust_cache_root}/seaweedfs/cargo"
+            export CARGO_TARGET_DIR="${rust_cache_root}/seaweedfs/target"
+            unset RUSTUP_HOME
+            ;;
+        esac
+      fi
       cd "${package_dir}"
       ALPINE_ARCH="${arch}" CARCH="${arch}" abuild -r
     )