diff --git a/.gitea/workflows/backend-quality-gate.yml b/.gitea/workflows/backend-quality-gate.yml
index 387e8f44..35383cd7 100644
--- a/.gitea/workflows/backend-quality-gate.yml
+++ b/.gitea/workflows/backend-quality-gate.yml
@@ -59,9 +59,12 @@ jobs:
             packages+=(python3-venv)
           fi
           rm -rf "$venv_probe"
-          if ! python3 -c 'import pathlib, sysconfig; assert pathlib.Path(sysconfig.get_path("include"), "Python.h").is_file()'; then
+          if ! python3 -c 'import pathlib, sysconfig; assert pathlib.Path(sysconfig.get_path("include"), "Python.h").is_file()' >/dev/null 2>&1; then
             packages+=(python3-dev)
           fi
+          if ! command -v g++ >/dev/null 2>&1; then
+            packages+=(g++)
+          fi
           if [ "${#packages[@]}" -gt 0 ]; then
             apt-get -o Acquire::Retries=3 -o Acquire::http::Timeout=30 \
               -o Acquire::https::Timeout=30 update
diff --git a/frontend/tests/staging-backend-workflows.test.ts b/frontend/tests/staging-backend-workflows.test.ts
index 94987121..b9a82cd3 100644
--- a/frontend/tests/staging-backend-workflows.test.ts
+++ b/frontend/tests/staging-backend-workflows.test.ts
@@ -146,6 +146,7 @@ test("Gitea quality gate validates before publishing an immutable ACR manifest",
   assert.match(workflow, /python3 -m venv "\$venv_probe\/venv"/);
   assert.match(workflow, /packages\+=\(python3-venv\)/);
   assert.match(workflow, /sysconfig\.get_path\("include"\)[\s\S]*packages\+=\(python3-dev\)/);
+  assert.match(workflow, /command -v g\+\+[\s\S]*packages\+=\(g\+\+\)/);
   assert.match(workflow, /apt-get install -y --no-install-recommends[\s\S]*"\$\{packages\[@\]\}"/);
   assert.doesNotMatch(workflow, /packages\+=\((?:nodejs|npm)\)|apt-get install[^\n]*(?:nodejs|npm)/);
   assert.equal((workflow.match(/NODE_TOOL_SOURCE_IMAGE: swr\.cn-north-4\.myhuaweicloud\.com\/ddn-k8s\/docker\.io\/library\/node:22-bookworm-slim@sha256:ef343465b6a14bbdf2ab52f6e100ec0659a792464fcf72c462370d88b3df909c/g) ?? []).length, 2);