Isolate Jenkins cargo environment

scripts/jenkins-prepare-cargo-env.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+: "${CARGO_HOME:?需要设置 CARGO_HOME}"
+: "${CARGO_TARGET_DIR:?需要设置 CARGO_TARGET_DIR}"
+: "${SCCACHE_DIR:?需要设置 SCCACHE_DIR}"
+
+ORIGINAL_HOME="${HOME:-}"
+CARGO_BUILD_HOME="${CARGO_BUILD_HOME:-$(dirname "${CARGO_HOME}")/home}"
+
+mkdir -p "${CARGO_HOME}" "${CARGO_TARGET_DIR}" "${SCCACHE_DIR}" "${CARGO_BUILD_HOME}"
+
+# Jenkins agent 当前以 root 运行时，/root/.cargo/config 可能带有失效镜像配置。
+# 生产构建使用组件级 HOME 与 CARGO_HOME，避免被全局 Cargo 配置污染。
+if [[ -z "${RUSTUP_HOME:-}" && -n "${ORIGINAL_HOME}" && -d "${ORIGINAL_HOME}/.rustup" ]]; then
+  export RUSTUP_HOME="${ORIGINAL_HOME}/.rustup"
+fi
+
+export HOME="${CARGO_BUILD_HOME}"
+export CARGO_HOME
+export CARGO_TARGET_DIR
+export SCCACHE_DIR
+
+cat >"${CARGO_HOME}/config.toml" <<'CARGO_CONFIG'
+[registries.crates-io]
+protocol = "sparse"
+CARGO_CONFIG
+
+echo "[cargo-env] HOME=${HOME}"
+echo "[cargo-env] CARGO_HOME=${CARGO_HOME}"
+echo "[cargo-env] CARGO_TARGET_DIR=${CARGO_TARGET_DIR}"
+echo "[cargo-env] SCCACHE_DIR=${SCCACHE_DIR}"
+if [[ -n "${RUSTUP_HOME:-}" ]]; then
+  echo "[cargo-env] RUSTUP_HOME=${RUSTUP_HOME}"
+fi